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Finding the Fourth Proportional to 460.25, 634.70 and 355.16

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Solution

The fourth proportional to 460.25, 634.70 and 355.16 is: 489.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.25 : 634.70 = 355.16 : x
  2. Step 2: Convert to fraction form
    460.25/634.70 = 355.16/x
  3. Step 3: Cross multiply
    460.25x = 634.70 × 355.16
  4. Step 4: Simplify right side
    460.25x = 225,422.53
  5. Step 5: Solve for x
    x = 225,422.53/460.25
  6. Step 6: Final answer
    x = 489.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.