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Finding the Fourth Proportional to 875.04, 1,311.36 and 484.46

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Solution

The fourth proportional to 875.04, 1,311.36 and 484.46 is: 726.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    875.04 : 1,311.36 = 484.46 : x
  2. Step 2: Convert to fraction form
    875.04/1,311.36 = 484.46/x
  3. Step 3: Cross multiply
    875.04x = 1,311.36 × 484.46
  4. Step 4: Simplify right side
    875.04x = 635,294.91
  5. Step 5: Solve for x
    x = 635,294.91/875.04
  6. Step 6: Final answer
    x = 726.02

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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.