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Finding the Fourth Proportional to 1,001.89, 1,382.57 and 559.77

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Solution

The fourth proportional to 1,001.89, 1,382.57 and 559.77 is: 772.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001.89 : 1,382.57 = 559.77 : x
  2. Step 2: Convert to fraction form
    1,001.89/1,382.57 = 559.77/x
  3. Step 3: Cross multiply
    1,001.89x = 1,382.57 × 559.77
  4. Step 4: Simplify right side
    1,001.89x = 773,921.21
  5. Step 5: Solve for x
    x = 773,921.21/1,001.89
  6. Step 6: Final answer
    x = 772.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.