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Finding the Fourth Proportional to 542.71, 814.40 and 196.02

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Solution

The fourth proportional to 542.71, 814.40 and 196.02 is: 294.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.71 : 814.40 = 196.02 : x
  2. Step 2: Convert to fraction form
    542.71/814.40 = 196.02/x
  3. Step 3: Cross multiply
    542.71x = 814.40 × 196.02
  4. Step 4: Simplify right side
    542.71x = 159,638.69
  5. Step 5: Solve for x
    x = 159,638.69/542.71
  6. Step 6: Final answer
    x = 294.15

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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.