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Finding the Fourth Proportional to 506.74, 699.18 and 296.92

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Solution

The fourth proportional to 506.74, 699.18 and 296.92 is: 409.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.74 : 699.18 = 296.92 : x
  2. Step 2: Convert to fraction form
    506.74/699.18 = 296.92/x
  3. Step 3: Cross multiply
    506.74x = 699.18 × 296.92
  4. Step 4: Simplify right side
    506.74x = 207,600.53
  5. Step 5: Solve for x
    x = 207,600.53/506.74
  6. Step 6: Final answer
    x = 409.68

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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.