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Finding the Fourth Proportional to 1,581.92, 2,373.02 and 411.91

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Solution

The fourth proportional to 1,581.92, 2,373.02 and 411.91 is: 617.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.92 : 2,373.02 = 411.91 : x
  2. Step 2: Convert to fraction form
    1,581.92/2,373.02 = 411.91/x
  3. Step 3: Cross multiply
    1,581.92x = 2,373.02 × 411.91
  4. Step 4: Simplify right side
    1,581.92x = 977,470.67
  5. Step 5: Solve for x
    x = 977,470.67/1,581.92
  6. Step 6: Final answer
    x = 617.90

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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.