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Finding the Fourth Proportional to 310.07, 427.89 and 179.11

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Solution

The fourth proportional to 310.07, 427.89 and 179.11 is: 247.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.07 : 427.89 = 179.11 : x
  2. Step 2: Convert to fraction form
    310.07/427.89 = 179.11/x
  3. Step 3: Cross multiply
    310.07x = 427.89 × 179.11
  4. Step 4: Simplify right side
    310.07x = 76,639.38
  5. Step 5: Solve for x
    x = 76,639.38/310.07
  6. Step 6: Final answer
    x = 247.17

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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.