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Finding the Fourth Proportional to 716.55, 988.13 and 467.44

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Solution

The fourth proportional to 716.55, 988.13 and 467.44 is: 644.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.55 : 988.13 = 467.44 : x
  2. Step 2: Convert to fraction form
    716.55/988.13 = 467.44/x
  3. Step 3: Cross multiply
    716.55x = 988.13 × 467.44
  4. Step 4: Simplify right side
    716.55x = 461,890.19
  5. Step 5: Solve for x
    x = 461,890.19/716.55
  6. Step 6: Final answer
    x = 644.61

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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.