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Finding the Fourth Proportional to 243.28, 335.23 and 187.93

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Solution

The fourth proportional to 243.28, 335.23 and 187.93 is: 258.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.28 : 335.23 = 187.93 : x
  2. Step 2: Convert to fraction form
    243.28/335.23 = 187.93/x
  3. Step 3: Cross multiply
    243.28x = 335.23 × 187.93
  4. Step 4: Simplify right side
    243.28x = 62,999.77
  5. Step 5: Solve for x
    x = 62,999.77/243.28
  6. Step 6: Final answer
    x = 258.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.