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Finding the Fourth Proportional to 306.86, 460.28 and 144.38

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Solution

The fourth proportional to 306.86, 460.28 and 144.38 is: 216.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.86 : 460.28 = 144.38 : x
  2. Step 2: Convert to fraction form
    306.86/460.28 = 144.38/x
  3. Step 3: Cross multiply
    306.86x = 460.28 × 144.38
  4. Step 4: Simplify right side
    306.86x = 66,456.74
  5. Step 5: Solve for x
    x = 66,456.74/306.86
  6. Step 6: Final answer
    x = 216.57

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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.