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Finding the Fourth Proportional to 1,452.68, 2,003.95 and 920.66

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Solution

The fourth proportional to 1,452.68, 2,003.95 and 920.66 is: 1,270.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,452.68 : 2,003.95 = 920.66 : x
  2. Step 2: Convert to fraction form
    1,452.68/2,003.95 = 920.66/x
  3. Step 3: Cross multiply
    1,452.68x = 2,003.95 × 920.66
  4. Step 4: Simplify right side
    1,452.68x = 1,844,956.61
  5. Step 5: Solve for x
    x = 1,844,956.61/1,452.68
  6. Step 6: Final answer
    x = 1,270.04

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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.