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Finding the Fourth Proportional to 844.06, 1,165.20 and 549.55

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Solution

The fourth proportional to 844.06, 1,165.20 and 549.55 is: 758.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.06 : 1,165.20 = 549.55 : x
  2. Step 2: Convert to fraction form
    844.06/1,165.20 = 549.55/x
  3. Step 3: Cross multiply
    844.06x = 1,165.20 × 549.55
  4. Step 4: Simplify right side
    844.06x = 640,335.66
  5. Step 5: Solve for x
    x = 640,335.66/844.06
  6. Step 6: Final answer
    x = 758.64

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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.