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Finding the Fourth Proportional to 506.76, 697.32 and 494.04

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Solution

The fourth proportional to 506.76, 697.32 and 494.04 is: 679.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.76 : 697.32 = 494.04 : x
  2. Step 2: Convert to fraction form
    506.76/697.32 = 494.04/x
  3. Step 3: Cross multiply
    506.76x = 697.32 × 494.04
  4. Step 4: Simplify right side
    506.76x = 344,503.97
  5. Step 5: Solve for x
    x = 344,503.97/506.76
  6. Step 6: Final answer
    x = 679.82

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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.