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Finding the Fourth Proportional to 307.72, 461.56 and 134.32

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Solution

The fourth proportional to 307.72, 461.56 and 134.32 is: 201.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.72 : 461.56 = 134.32 : x
  2. Step 2: Convert to fraction form
    307.72/461.56 = 134.32/x
  3. Step 3: Cross multiply
    307.72x = 461.56 × 134.32
  4. Step 4: Simplify right side
    307.72x = 61,996.74
  5. Step 5: Solve for x
    x = 61,996.74/307.72
  6. Step 6: Final answer
    x = 201.47

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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.