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Finding the Fourth Proportional to 625.69, 863.91 and 502.03

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Solution

The fourth proportional to 625.69, 863.91 and 502.03 is: 693.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.69 : 863.91 = 502.03 : x
  2. Step 2: Convert to fraction form
    625.69/863.91 = 502.03/x
  3. Step 3: Cross multiply
    625.69x = 863.91 × 502.03
  4. Step 4: Simplify right side
    625.69x = 433,708.74
  5. Step 5: Solve for x
    x = 433,708.74/625.69
  6. Step 6: Final answer
    x = 693.17

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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.