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Finding the Fourth Proportional to 542.26, 813.40 and 177.08

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Solution

The fourth proportional to 542.26, 813.40 and 177.08 is: 265.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.26 : 813.40 = 177.08 : x
  2. Step 2: Convert to fraction form
    542.26/813.40 = 177.08/x
  3. Step 3: Cross multiply
    542.26x = 813.40 × 177.08
  4. Step 4: Simplify right side
    542.26x = 144,036.87
  5. Step 5: Solve for x
    x = 144,036.87/542.26
  6. Step 6: Final answer
    x = 265.62

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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.