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Finding the Fourth Proportional to 403.72, 605.58 and 160.12

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Solution

The fourth proportional to 403.72, 605.58 and 160.12 is: 240.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.72 : 605.58 = 160.12 : x
  2. Step 2: Convert to fraction form
    403.72/605.58 = 160.12/x
  3. Step 3: Cross multiply
    403.72x = 605.58 × 160.12
  4. Step 4: Simplify right side
    403.72x = 96,965.47
  5. Step 5: Solve for x
    x = 96,965.47/403.72
  6. Step 6: Final answer
    x = 240.18

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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.