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Finding the Fourth Proportional to 922.61, 1,273.37 and 549.91

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Solution

The fourth proportional to 922.61, 1,273.37 and 549.91 is: 758.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.61 : 1,273.37 = 549.91 : x
  2. Step 2: Convert to fraction form
    922.61/1,273.37 = 549.91/x
  3. Step 3: Cross multiply
    922.61x = 1,273.37 × 549.91
  4. Step 4: Simplify right side
    922.61x = 700,233.67
  5. Step 5: Solve for x
    x = 700,233.67/922.61
  6. Step 6: Final answer
    x = 758.97

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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.