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Finding the Fourth Proportional to 832.47, 1,245.87 and 626.52

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Solution

The fourth proportional to 832.47, 1,245.87 and 626.52 is: 937.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    832.47 : 1,245.87 = 626.52 : x
  2. Step 2: Convert to fraction form
    832.47/1,245.87 = 626.52/x
  3. Step 3: Cross multiply
    832.47x = 1,245.87 × 626.52
  4. Step 4: Simplify right side
    832.47x = 780,562.47
  5. Step 5: Solve for x
    x = 780,562.47/832.47
  6. Step 6: Final answer
    x = 937.65

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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.