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Finding the Fourth Proportional to 526.27, 789.48 and 252.31

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Solution

The fourth proportional to 526.27, 789.48 and 252.31 is: 378.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.27 : 789.48 = 252.31 : x
  2. Step 2: Convert to fraction form
    526.27/789.48 = 252.31/x
  3. Step 3: Cross multiply
    526.27x = 789.48 × 252.31
  4. Step 4: Simplify right side
    526.27x = 199,191.73
  5. Step 5: Solve for x
    x = 199,191.73/526.27
  6. Step 6: Final answer
    x = 378.50

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Find fourth proportional to 263.13, 394.74 and 126.15
Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.