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Finding the Fourth Proportional to 1,753.79, 2,631.14 and 658.18

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Solution

The fourth proportional to 1,753.79, 2,631.14 and 658.18 is: 987.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,753.79 : 2,631.14 = 658.18 : x
  2. Step 2: Convert to fraction form
    1,753.79/2,631.14 = 658.18/x
  3. Step 3: Cross multiply
    1,753.79x = 2,631.14 × 658.18
  4. Step 4: Simplify right side
    1,753.79x = 1,731,752.21
  5. Step 5: Solve for x
    x = 1,731,752.21/1,753.79
  6. Step 6: Final answer
    x = 987.43

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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.