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Finding the Fourth Proportional to 1,324.01, 1,986.01 and 458.32

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Solution

The fourth proportional to 1,324.01, 1,986.01 and 458.32 is: 687.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324.01 : 1,986.01 = 458.32 : x
  2. Step 2: Convert to fraction form
    1,324.01/1,986.01 = 458.32/x
  3. Step 3: Cross multiply
    1,324.01x = 1,986.01 × 458.32
  4. Step 4: Simplify right side
    1,324.01x = 910,231.16
  5. Step 5: Solve for x
    x = 910,231.16/1,324.01
  6. Step 6: Final answer
    x = 687.48

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Similar ratio
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1.5x scale

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.