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Finding the Fourth Proportional to 766.01, 1,147.98 and 549.11

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Solution

The fourth proportional to 766.01, 1,147.98 and 549.11 is: 822.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    766.01 : 1,147.98 = 549.11 : x
  2. Step 2: Convert to fraction form
    766.01/1,147.98 = 549.11/x
  3. Step 3: Cross multiply
    766.01x = 1,147.98 × 549.11
  4. Step 4: Simplify right side
    766.01x = 630,367.30
  5. Step 5: Solve for x
    x = 630,367.30/766.01
  6. Step 6: Final answer
    x = 822.92

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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.