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Finding the Fourth Proportional to 717.49, 1,076.10 and 197.38

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Solution

The fourth proportional to 717.49, 1,076.10 and 197.38 is: 296.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.49 : 1,076.10 = 197.38 : x
  2. Step 2: Convert to fraction form
    717.49/1,076.10 = 197.38/x
  3. Step 3: Cross multiply
    717.49x = 1,076.10 × 197.38
  4. Step 4: Simplify right side
    717.49x = 212,400.62
  5. Step 5: Solve for x
    x = 212,400.62/717.49
  6. Step 6: Final answer
    x = 296.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.