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Finding the Fourth Proportional to 526.15, 789.09 and 344.51

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Solution

The fourth proportional to 526.15, 789.09 and 344.51 is: 516.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.15 : 789.09 = 344.51 : x
  2. Step 2: Convert to fraction form
    526.15/789.09 = 344.51/x
  3. Step 3: Cross multiply
    526.15x = 789.09 × 344.51
  4. Step 4: Simplify right side
    526.15x = 271,849.40
  5. Step 5: Solve for x
    x = 271,849.40/526.15
  6. Step 6: Final answer
    x = 516.68

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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.