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Finding the Fourth Proportional to 1,001.34, 1,382.10 and 801.39

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Solution

The fourth proportional to 1,001.34, 1,382.10 and 801.39 is: 1,106.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001.34 : 1,382.10 = 801.39 : x
  2. Step 2: Convert to fraction form
    1,001.34/1,382.10 = 801.39/x
  3. Step 3: Cross multiply
    1,001.34x = 1,382.10 × 801.39
  4. Step 4: Simplify right side
    1,001.34x = 1,107,601.12
  5. Step 5: Solve for x
    x = 1,107,601.12/1,001.34
  6. Step 6: Final answer
    x = 1,106.12

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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.