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Finding the Fourth Proportional to 625.89, 938.43 and 549.00

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Solution

The fourth proportional to 625.89, 938.43 and 549.00 is: 823.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.89 : 938.43 = 549.00 : x
  2. Step 2: Convert to fraction form
    625.89/938.43 = 549.00/x
  3. Step 3: Cross multiply
    625.89x = 938.43 × 549.00
  4. Step 4: Simplify right side
    625.89x = 515,200.42
  5. Step 5: Solve for x
    x = 515,200.42/625.89
  6. Step 6: Final answer
    x = 823.16

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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.