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Finding the Fourth Proportional to 203.93, 279.95 and 187.53

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Solution

The fourth proportional to 203.93, 279.95 and 187.53 is: 257.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.93 : 279.95 = 187.53 : x
  2. Step 2: Convert to fraction form
    203.93/279.95 = 187.53/x
  3. Step 3: Cross multiply
    203.93x = 279.95 × 187.53
  4. Step 4: Simplify right side
    203.93x = 52,499.49
  5. Step 5: Solve for x
    x = 52,499.49/203.93
  6. Step 6: Final answer
    x = 257.44

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.