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Finding the Fourth Proportional to 542.91, 814.50 and 177.70

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Solution

The fourth proportional to 542.91, 814.50 and 177.70 is: 266.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.91 : 814.50 = 177.70 : x
  2. Step 2: Convert to fraction form
    542.91/814.50 = 177.70/x
  3. Step 3: Cross multiply
    542.91x = 814.50 × 177.70
  4. Step 4: Simplify right side
    542.91x = 144,736.65
  5. Step 5: Solve for x
    x = 144,736.65/542.91
  6. Step 6: Final answer
    x = 266.59

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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.