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Finding the Fourth Proportional to 724.95, 1,000.18 and 444.89

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Solution

The fourth proportional to 724.95, 1,000.18 and 444.89 is: 613.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    724.95 : 1,000.18 = 444.89 : x
  2. Step 2: Convert to fraction form
    724.95/1,000.18 = 444.89/x
  3. Step 3: Cross multiply
    724.95x = 1,000.18 × 444.89
  4. Step 4: Simplify right side
    724.95x = 444,973.14
  5. Step 5: Solve for x
    x = 444,973.14/724.95
  6. Step 6: Final answer
    x = 613.80

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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.