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Finding the Fourth Proportional to 717.01, 988.98 and 468.55

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Solution

The fourth proportional to 717.01, 988.98 and 468.55 is: 646.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.01 : 988.98 = 468.55 : x
  2. Step 2: Convert to fraction form
    717.01/988.98 = 468.55/x
  3. Step 3: Cross multiply
    717.01x = 988.98 × 468.55
  4. Step 4: Simplify right side
    717.01x = 463,386.58
  5. Step 5: Solve for x
    x = 463,386.58/717.01
  6. Step 6: Final answer
    x = 646.28

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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.