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Finding the Fourth Proportional to 1,591.59, 2,387.48 and 617.61

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Solution

The fourth proportional to 1,591.59, 2,387.48 and 617.61 is: 926.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,591.59 : 2,387.48 = 617.61 : x
  2. Step 2: Convert to fraction form
    1,591.59/2,387.48 = 617.61/x
  3. Step 3: Cross multiply
    1,591.59x = 2,387.48 × 617.61
  4. Step 4: Simplify right side
    1,591.59x = 1,474,528.43
  5. Step 5: Solve for x
    x = 1,474,528.43/1,591.59
  6. Step 6: Final answer
    x = 926.45

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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.