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Finding the Fourth Proportional to 307.63, 461.13 and 170.74

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Solution

The fourth proportional to 307.63, 461.13 and 170.74 is: 255.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.63 : 461.13 = 170.74 : x
  2. Step 2: Convert to fraction form
    307.63/461.13 = 170.74/x
  3. Step 3: Cross multiply
    307.63x = 461.13 × 170.74
  4. Step 4: Simplify right side
    307.63x = 78,731.03
  5. Step 5: Solve for x
    x = 78,731.03/307.63
  6. Step 6: Final answer
    x = 255.93

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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.