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Finding the Fourth Proportional to 922.06, 1,272.60 and 549.25

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Solution

The fourth proportional to 922.06, 1,272.60 and 549.25 is: 758.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.06 : 1,272.60 = 549.25 : x
  2. Step 2: Convert to fraction form
    922.06/1,272.60 = 549.25/x
  3. Step 3: Cross multiply
    922.06x = 1,272.60 × 549.25
  4. Step 4: Simplify right side
    922.06x = 698,975.55
  5. Step 5: Solve for x
    x = 698,975.55/922.06
  6. Step 6: Final answer
    x = 758.06

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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.