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Finding the Fourth Proportional to 1,324.22, 1,986.33 and 458.53

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Solution

The fourth proportional to 1,324.22, 1,986.33 and 458.53 is: 687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324.22 : 1,986.33 = 458.53 : x
  2. Step 2: Convert to fraction form
    1,324.22/1,986.33 = 458.53/x
  3. Step 3: Cross multiply
    1,324.22x = 1,986.33 × 458.53
  4. Step 4: Simplify right side
    1,324.22x = 910,794.38
  5. Step 5: Solve for x
    x = 910,794.38/1,324.22
  6. Step 6: Final answer
    x = 687.80

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Similar ratio
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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.