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Finding the Fourth Proportional to 250.95, 346.46 and 172.70

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Solution

The fourth proportional to 250.95, 346.46 and 172.70 is: 238.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.95 : 346.46 = 172.70 : x
  2. Step 2: Convert to fraction form
    250.95/346.46 = 172.70/x
  3. Step 3: Cross multiply
    250.95x = 346.46 × 172.70
  4. Step 4: Simplify right side
    250.95x = 59,833.64
  5. Step 5: Solve for x
    x = 59,833.64/250.95
  6. Step 6: Final answer
    x = 238.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.