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Finding the Fourth Proportional to 310.28, 465.62 and 115.27

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Solution

The fourth proportional to 310.28, 465.62 and 115.27 is: 172.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.28 : 465.62 = 115.27 : x
  2. Step 2: Convert to fraction form
    310.28/465.62 = 115.27/x
  3. Step 3: Cross multiply
    310.28x = 465.62 × 115.27
  4. Step 4: Simplify right side
    310.28x = 53,671.14
  5. Step 5: Solve for x
    x = 53,671.14/310.28
  6. Step 6: Final answer
    x = 172.98

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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.