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Finding the Fourth Proportional to 497.42, 746.12 and 132.20

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Solution

The fourth proportional to 497.42, 746.12 and 132.20 is: 198.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.42 : 746.12 = 132.20 : x
  2. Step 2: Convert to fraction form
    497.42/746.12 = 132.20/x
  3. Step 3: Cross multiply
    497.42x = 746.12 × 132.20
  4. Step 4: Simplify right side
    497.42x = 98,637.06
  5. Step 5: Solve for x
    x = 98,637.06/497.42
  6. Step 6: Final answer
    x = 198.30

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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.