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Finding the Fourth Proportional to 798.12, 1,100.82 and 549.48

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Solution

The fourth proportional to 798.12, 1,100.82 and 549.48 is: 757.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    798.12 : 1,100.82 = 549.48 : x
  2. Step 2: Convert to fraction form
    798.12/1,100.82 = 549.48/x
  3. Step 3: Cross multiply
    798.12x = 1,100.82 × 549.48
  4. Step 4: Simplify right side
    798.12x = 604,878.57
  5. Step 5: Solve for x
    x = 604,878.57/798.12
  6. Step 6: Final answer
    x = 757.88

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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.