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Finding the Fourth Proportional to 1,775.27, 2,663.19 and 542.59

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Solution

The fourth proportional to 1,775.27, 2,663.19 and 542.59 is: 813.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,775.27 : 2,663.19 = 542.59 : x
  2. Step 2: Convert to fraction form
    1,775.27/2,663.19 = 542.59/x
  3. Step 3: Cross multiply
    1,775.27x = 2,663.19 × 542.59
  4. Step 4: Simplify right side
    1,775.27x = 1,445,020.26
  5. Step 5: Solve for x
    x = 1,445,020.26/1,775.27
  6. Step 6: Final answer
    x = 813.97

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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.