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Finding the Fourth Proportional to 307.20, 461.14 and 170.38

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Solution

The fourth proportional to 307.20, 461.14 and 170.38 is: 255.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.20 : 461.14 = 170.38 : x
  2. Step 2: Convert to fraction form
    307.20/461.14 = 170.38/x
  3. Step 3: Cross multiply
    307.20x = 461.14 × 170.38
  4. Step 4: Simplify right side
    307.20x = 78,567.45
  5. Step 5: Solve for x
    x = 78,567.45/307.20
  6. Step 6: Final answer
    x = 255.75

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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.