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Finding the Fourth Proportional to 187.53, 279.54 and 172.95

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Solution

The fourth proportional to 187.53, 279.54 and 172.95 is: 257.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    187.53 : 279.54 = 172.95 : x
  2. Step 2: Convert to fraction form
    187.53/279.54 = 172.95/x
  3. Step 3: Cross multiply
    187.53x = 279.54 × 172.95
  4. Step 4: Simplify right side
    187.53x = 48,346.44
  5. Step 5: Solve for x
    x = 48,346.44/187.53
  6. Step 6: Final answer
    x = 257.81

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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.