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Finding the Fourth Proportional to 460.79, 691.48 and 217.33

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Solution

The fourth proportional to 460.79, 691.48 and 217.33 is: 326.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.79 : 691.48 = 217.33 : x
  2. Step 2: Convert to fraction form
    460.79/691.48 = 217.33/x
  3. Step 3: Cross multiply
    460.79x = 691.48 × 217.33
  4. Step 4: Simplify right side
    460.79x = 150,277.89
  5. Step 5: Solve for x
    x = 150,277.89/460.79
  6. Step 6: Final answer
    x = 326.13

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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.