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Finding the Fourth Proportional to 506.60, 698.87 and 296.79

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Solution

The fourth proportional to 506.60, 698.87 and 296.79 is: 409.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.60 : 698.87 = 296.79 : x
  2. Step 2: Convert to fraction form
    506.60/698.87 = 296.79/x
  3. Step 3: Cross multiply
    506.60x = 698.87 × 296.79
  4. Step 4: Simplify right side
    506.60x = 207,416.14
  5. Step 5: Solve for x
    x = 207,416.14/506.60
  6. Step 6: Final answer
    x = 409.43

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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.