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Finding the Fourth Proportional to 716.38, 988.23 and 541.42

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Solution

The fourth proportional to 716.38, 988.23 and 541.42 is: 746.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.38 : 988.23 = 541.42 : x
  2. Step 2: Convert to fraction form
    716.38/988.23 = 541.42/x
  3. Step 3: Cross multiply
    716.38x = 988.23 × 541.42
  4. Step 4: Simplify right side
    716.38x = 535,047.49
  5. Step 5: Solve for x
    x = 535,047.49/716.38
  6. Step 6: Final answer
    x = 746.88

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Double scale
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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.