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Finding the Fourth Proportional to 253.74, 381.15 and 233.76

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Solution

The fourth proportional to 253.74, 381.15 and 233.76 is: 351.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.74 : 381.15 = 233.76 : x
  2. Step 2: Convert to fraction form
    253.74/381.15 = 233.76/x
  3. Step 3: Cross multiply
    253.74x = 381.15 × 233.76
  4. Step 4: Simplify right side
    253.74x = 89,097.62
  5. Step 5: Solve for x
    x = 89,097.62/253.74
  6. Step 6: Final answer
    x = 351.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.