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Finding the Fourth Proportional to 506.20, 759.66 and 457.24

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Solution

The fourth proportional to 506.20, 759.66 and 457.24 is: 686.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.20 : 759.66 = 457.24 : x
  2. Step 2: Convert to fraction form
    506.20/759.66 = 457.24/x
  3. Step 3: Cross multiply
    506.20x = 759.66 × 457.24
  4. Step 4: Simplify right side
    506.20x = 347,346.94
  5. Step 5: Solve for x
    x = 347,346.94/506.20
  6. Step 6: Final answer
    x = 686.19

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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.