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Finding the Fourth Proportional to 250.74, 378.18 and 230.76

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Solution

The fourth proportional to 250.74, 378.18 and 230.76 is: 348.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.74 : 378.18 = 230.76 : x
  2. Step 2: Convert to fraction form
    250.74/378.18 = 230.76/x
  3. Step 3: Cross multiply
    250.74x = 378.18 × 230.76
  4. Step 4: Simplify right side
    250.74x = 87,268.82
  5. Step 5: Solve for x
    x = 87,268.82/250.74
  6. Step 6: Final answer
    x = 348.05

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.