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Finding the Fourth Proportional to 798.33, 1,100.64 and 549.21

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Solution

The fourth proportional to 798.33, 1,100.64 and 549.21 is: 757.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    798.33 : 1,100.64 = 549.21 : x
  2. Step 2: Convert to fraction form
    798.33/1,100.64 = 549.21/x
  3. Step 3: Cross multiply
    798.33x = 1,100.64 × 549.21
  4. Step 4: Simplify right side
    798.33x = 604,482.49
  5. Step 5: Solve for x
    x = 604,482.49/798.33
  6. Step 6: Final answer
    x = 757.18

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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.