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Finding the Fourth Proportional to 293.80, 405.27 and 187.42

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Solution

The fourth proportional to 293.80, 405.27 and 187.42 is: 258.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.80 : 405.27 = 187.42 : x
  2. Step 2: Convert to fraction form
    293.80/405.27 = 187.42/x
  3. Step 3: Cross multiply
    293.80x = 405.27 × 187.42
  4. Step 4: Simplify right side
    293.80x = 75,955.70
  5. Step 5: Solve for x
    x = 75,955.70/293.80
  6. Step 6: Final answer
    x = 258.53

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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.