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Finding the Fourth Proportional to 250.79, 345.83 and 172.17

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Solution

The fourth proportional to 250.79, 345.83 and 172.17 is: 237.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.79 : 345.83 = 172.17 : x
  2. Step 2: Convert to fraction form
    250.79/345.83 = 172.17/x
  3. Step 3: Cross multiply
    250.79x = 345.83 × 172.17
  4. Step 4: Simplify right side
    250.79x = 59,540.69
  5. Step 5: Solve for x
    x = 59,540.69/250.79
  6. Step 6: Final answer
    x = 237.42

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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.