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Finding the Fourth Proportional to 453.29, 679.97 and 145.18

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Solution

The fourth proportional to 453.29, 679.97 and 145.18 is: 217.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.29 : 679.97 = 145.18 : x
  2. Step 2: Convert to fraction form
    453.29/679.97 = 145.18/x
  3. Step 3: Cross multiply
    453.29x = 679.97 × 145.18
  4. Step 4: Simplify right side
    453.29x = 98,718.04
  5. Step 5: Solve for x
    x = 98,718.04/453.29
  6. Step 6: Final answer
    x = 217.78

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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.