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Finding the Fourth Proportional to 717.39, 988.88 and 468.59

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Solution

The fourth proportional to 717.39, 988.88 and 468.59 is: 645.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.39 : 988.88 = 468.59 : x
  2. Step 2: Convert to fraction form
    717.39/988.88 = 468.59/x
  3. Step 3: Cross multiply
    717.39x = 988.88 × 468.59
  4. Step 4: Simplify right side
    717.39x = 463,371.99
  5. Step 5: Solve for x
    x = 463,371.99/717.39
  6. Step 6: Final answer
    x = 645.91

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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.