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Finding the Fourth Proportional to 187.31, 279.19 and 173.46

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Solution

The fourth proportional to 187.31, 279.19 and 173.46 is: 258.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    187.31 : 279.19 = 173.46 : x
  2. Step 2: Convert to fraction form
    187.31/279.19 = 173.46/x
  3. Step 3: Cross multiply
    187.31x = 279.19 × 173.46
  4. Step 4: Simplify right side
    187.31x = 48,428.30
  5. Step 5: Solve for x
    x = 48,428.30/187.31
  6. Step 6: Final answer
    x = 258.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.