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Finding the Fourth Proportional to 724.74, 999.72 and 607.30

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Solution

The fourth proportional to 724.74, 999.72 and 607.30 is: 837.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    724.74 : 999.72 = 607.30 : x
  2. Step 2: Convert to fraction form
    724.74/999.72 = 607.30/x
  3. Step 3: Cross multiply
    724.74x = 999.72 × 607.30
  4. Step 4: Simplify right side
    724.74x = 607,129.96
  5. Step 5: Solve for x
    x = 607,129.96/724.74
  6. Step 6: Final answer
    x = 837.72

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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.