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Finding the Fourth Proportional to 549.66, 823.43 and 488.30

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Solution

The fourth proportional to 549.66, 823.43 and 488.30 is: 731.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.66 : 823.43 = 488.30 : x
  2. Step 2: Convert to fraction form
    549.66/823.43 = 488.30/x
  3. Step 3: Cross multiply
    549.66x = 823.43 × 488.30
  4. Step 4: Simplify right side
    549.66x = 402,080.87
  5. Step 5: Solve for x
    x = 402,080.87/549.66
  6. Step 6: Final answer
    x = 731.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.