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Finding the Fourth Proportional to 1,451.51, 2,177.66 and 758.62

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Solution

The fourth proportional to 1,451.51, 2,177.66 and 758.62 is: 1,138.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.51 : 2,177.66 = 758.62 : x
  2. Step 2: Convert to fraction form
    1,451.51/2,177.66 = 758.62/x
  3. Step 3: Cross multiply
    1,451.51x = 2,177.66 × 758.62
  4. Step 4: Simplify right side
    1,451.51x = 1,652,006.66
  5. Step 5: Solve for x
    x = 1,652,006.66/1,451.51
  6. Step 6: Final answer
    x = 1,138.13

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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.