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Finding the Fourth Proportional to 527.63, 728.15 and 294.75

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Solution

The fourth proportional to 527.63, 728.15 and 294.75 is: 406.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.63 : 728.15 = 294.75 : x
  2. Step 2: Convert to fraction form
    527.63/728.15 = 294.75/x
  3. Step 3: Cross multiply
    527.63x = 728.15 × 294.75
  4. Step 4: Simplify right side
    527.63x = 214,620.74
  5. Step 5: Solve for x
    x = 214,620.74/527.63
  6. Step 6: Final answer
    x = 406.77

Related Problems

Find fourth proportional to 263.81, 364.07 and 147.38
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.