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Finding the Fourth Proportional to 675.41, 932.18 and 489.75

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Solution

The fourth proportional to 675.41, 932.18 and 489.75 is: 675.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.41 : 932.18 = 489.75 : x
  2. Step 2: Convert to fraction form
    675.41/932.18 = 489.75/x
  3. Step 3: Cross multiply
    675.41x = 932.18 × 489.75
  4. Step 4: Simplify right side
    675.41x = 456,532.71
  5. Step 5: Solve for x
    x = 456,532.71/675.41
  6. Step 6: Final answer
    x = 675.94

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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.