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Finding the Fourth Proportional to 307.26, 460.71 and 144.78

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Solution

The fourth proportional to 307.26, 460.71 and 144.78 is: 217.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.26 : 460.71 = 144.78 : x
  2. Step 2: Convert to fraction form
    307.26/460.71 = 144.78/x
  3. Step 3: Cross multiply
    307.26x = 460.71 × 144.78
  4. Step 4: Simplify right side
    307.26x = 66,701.59
  5. Step 5: Solve for x
    x = 66,701.59/307.26
  6. Step 6: Final answer
    x = 217.09

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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.