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Finding the Fourth Proportional to 1,659.98, 2,489.97 and 565.13

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Solution

The fourth proportional to 1,659.98, 2,489.97 and 565.13 is: 847.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,659.98 : 2,489.97 = 565.13 : x
  2. Step 2: Convert to fraction form
    1,659.98/2,489.97 = 565.13/x
  3. Step 3: Cross multiply
    1,659.98x = 2,489.97 × 565.13
  4. Step 4: Simplify right side
    1,659.98x = 1,407,156.75
  5. Step 5: Solve for x
    x = 1,407,156.75/1,659.98
  6. Step 6: Final answer
    x = 847.70

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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.