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Finding the Fourth Proportional to 1,001.08, 1,381.56 and 559.04

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Solution

The fourth proportional to 1,001.08, 1,381.56 and 559.04 is: 771.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001.08 : 1,381.56 = 559.04 : x
  2. Step 2: Convert to fraction form
    1,001.08/1,381.56 = 559.04/x
  3. Step 3: Cross multiply
    1,001.08x = 1,381.56 × 559.04
  4. Step 4: Simplify right side
    1,001.08x = 772,347.30
  5. Step 5: Solve for x
    x = 772,347.30/1,001.08
  6. Step 6: Final answer
    x = 771.51

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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.