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Finding the Fourth Proportional to 615.51, 922.14 and 548.73

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Solution

The fourth proportional to 615.51, 922.14 and 548.73 is: 822.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.51 : 922.14 = 548.73 : x
  2. Step 2: Convert to fraction form
    615.51/922.14 = 548.73/x
  3. Step 3: Cross multiply
    615.51x = 922.14 × 548.73
  4. Step 4: Simplify right side
    615.51x = 506,005.88
  5. Step 5: Solve for x
    x = 506,005.88/615.51
  6. Step 6: Final answer
    x = 822.09

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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.