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Finding the Fourth Proportional to 847.97, 1,272.13 and 292.72

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Solution

The fourth proportional to 847.97, 1,272.13 and 292.72 is: 439.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    847.97 : 1,272.13 = 292.72 : x
  2. Step 2: Convert to fraction form
    847.97/1,272.13 = 292.72/x
  3. Step 3: Cross multiply
    847.97x = 1,272.13 × 292.72
  4. Step 4: Simplify right side
    847.97x = 372,376.43
  5. Step 5: Solve for x
    x = 372,376.43/847.97
  6. Step 6: Final answer
    x = 439.14

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.