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Finding the Fourth Proportional to 922.99, 1,273.69 and 549.88

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Solution

The fourth proportional to 922.99, 1,273.69 and 549.88 is: 758.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.99 : 1,273.69 = 549.88 : x
  2. Step 2: Convert to fraction form
    922.99/1,273.69 = 549.88/x
  3. Step 3: Cross multiply
    922.99x = 1,273.69 × 549.88
  4. Step 4: Simplify right side
    922.99x = 700,376.66
  5. Step 5: Solve for x
    x = 700,376.66/922.99
  6. Step 6: Final answer
    x = 758.81

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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.