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Finding the Fourth Proportional to 460.73, 691.27 and 172.19

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Solution

The fourth proportional to 460.73, 691.27 and 172.19 is: 258.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.73 : 691.27 = 172.19 : x
  2. Step 2: Convert to fraction form
    460.73/691.27 = 172.19/x
  3. Step 3: Cross multiply
    460.73x = 691.27 × 172.19
  4. Step 4: Simplify right side
    460.73x = 119,028.48
  5. Step 5: Solve for x
    x = 119,028.48/460.73
  6. Step 6: Final answer
    x = 258.35

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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.