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Finding the Fourth Proportional to 836.68, 1,154.37 and 542.29

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Solution

The fourth proportional to 836.68, 1,154.37 and 542.29 is: 748.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.68 : 1,154.37 = 542.29 : x
  2. Step 2: Convert to fraction form
    836.68/1,154.37 = 542.29/x
  3. Step 3: Cross multiply
    836.68x = 1,154.37 × 542.29
  4. Step 4: Simplify right side
    836.68x = 626,003.31
  5. Step 5: Solve for x
    x = 626,003.31/836.68
  6. Step 6: Final answer
    x = 748.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.