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Finding the Fourth Proportional to 542.91, 813.21 and 250.65

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Solution

The fourth proportional to 542.91, 813.21 and 250.65 is: 375.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.91 : 813.21 = 250.65 : x
  2. Step 2: Convert to fraction form
    542.91/813.21 = 250.65/x
  3. Step 3: Cross multiply
    542.91x = 813.21 × 250.65
  4. Step 4: Simplify right side
    542.91x = 203,831.09
  5. Step 5: Solve for x
    x = 203,831.09/542.91
  6. Step 6: Final answer
    x = 375.44

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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.