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Finding the Fourth Proportional to 310.88, 466.32 and 125.79

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Solution

The fourth proportional to 310.88, 466.32 and 125.79 is: 188.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.88 : 466.32 = 125.79 : x
  2. Step 2: Convert to fraction form
    310.88/466.32 = 125.79/x
  3. Step 3: Cross multiply
    310.88x = 466.32 × 125.79
  4. Step 4: Simplify right side
    310.88x = 58,660.14
  5. Step 5: Solve for x
    x = 58,660.14/310.88
  6. Step 6: Final answer
    x = 188.69

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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.