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Finding the Fourth Proportional to 922.68, 1,273.44 and 549.69

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Solution

The fourth proportional to 922.68, 1,273.44 and 549.69 is: 758.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.68 : 1,273.44 = 549.69 : x
  2. Step 2: Convert to fraction form
    922.68/1,273.44 = 549.69/x
  3. Step 3: Cross multiply
    922.68x = 1,273.44 × 549.69
  4. Step 4: Simplify right side
    922.68x = 699,997.23
  5. Step 5: Solve for x
    x = 699,997.23/922.68
  6. Step 6: Final answer
    x = 758.66

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Double scale
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1.5x scale

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.