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Finding the Fourth Proportional to 675.16, 932.14 and 489.25

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Solution

The fourth proportional to 675.16, 932.14 and 489.25 is: 675.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.16 : 932.14 = 489.25 : x
  2. Step 2: Convert to fraction form
    675.16/932.14 = 489.25/x
  3. Step 3: Cross multiply
    675.16x = 932.14 × 489.25
  4. Step 4: Simplify right side
    675.16x = 456,043.61
  5. Step 5: Solve for x
    x = 456,043.61/675.16
  6. Step 6: Final answer
    x = 675.47

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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.