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Finding the Fourth Proportional to 1,502.66, 2,252.47 and 721.52

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Solution

The fourth proportional to 1,502.66, 2,252.47 and 721.52 is: 1,081.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,502.66 : 2,252.47 = 721.52 : x
  2. Step 2: Convert to fraction form
    1,502.66/2,252.47 = 721.52/x
  3. Step 3: Cross multiply
    1,502.66x = 2,252.47 × 721.52
  4. Step 4: Simplify right side
    1,502.66x = 1,625,202.15
  5. Step 5: Solve for x
    x = 1,625,202.15/1,502.66
  6. Step 6: Final answer
    x = 1,081.55

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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.