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Finding the Fourth Proportional to 1,001.27, 1,501.79 and 270.90

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Solution

The fourth proportional to 1,001.27, 1,501.79 and 270.90 is: 406.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001.27 : 1,501.79 = 270.90 : x
  2. Step 2: Convert to fraction form
    1,001.27/1,501.79 = 270.90/x
  3. Step 3: Cross multiply
    1,001.27x = 1,501.79 × 270.90
  4. Step 4: Simplify right side
    1,001.27x = 406,833.56
  5. Step 5: Solve for x
    x = 406,833.56/1,001.27
  6. Step 6: Final answer
    x = 406.32

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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.