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Finding the Fourth Proportional to 1,044.97, 1,565.43 and 985.03

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Solution

The fourth proportional to 1,044.97, 1,565.43 and 985.03 is: 1,475.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,044.97 : 1,565.43 = 985.03 : x
  2. Step 2: Convert to fraction form
    1,044.97/1,565.43 = 985.03/x
  3. Step 3: Cross multiply
    1,044.97x = 1,565.43 × 985.03
  4. Step 4: Simplify right side
    1,044.97x = 1,541,995.51
  5. Step 5: Solve for x
    x = 1,541,995.51/1,044.97
  6. Step 6: Final answer
    x = 1,475.64

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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.