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Finding the Fourth Proportional to 615.11, 926.81 and 548.79

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Solution

The fourth proportional to 615.11, 926.81 and 548.79 is: 826.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.11 : 926.81 = 548.79 : x
  2. Step 2: Convert to fraction form
    615.11/926.81 = 548.79/x
  3. Step 3: Cross multiply
    615.11x = 926.81 × 548.79
  4. Step 4: Simplify right side
    615.11x = 508,625.11
  5. Step 5: Solve for x
    x = 508,625.11/615.11
  6. Step 6: Final answer
    x = 826.88

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.