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Finding the Fourth Proportional to 804.87, 1,108.97 and 542.43

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Solution

The fourth proportional to 804.87, 1,108.97 and 542.43 is: 747.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    804.87 : 1,108.97 = 542.43 : x
  2. Step 2: Convert to fraction form
    804.87/1,108.97 = 542.43/x
  3. Step 3: Cross multiply
    804.87x = 1,108.97 × 542.43
  4. Step 4: Simplify right side
    804.87x = 601,535.88
  5. Step 5: Solve for x
    x = 601,535.88/804.87
  6. Step 6: Final answer
    x = 747.37

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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.