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Finding the Fourth Proportional to 250.61, 345.94 and 157.57

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Solution

The fourth proportional to 250.61, 345.94 and 157.57 is: 217.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.61 : 345.94 = 157.57 : x
  2. Step 2: Convert to fraction form
    250.61/345.94 = 157.57/x
  3. Step 3: Cross multiply
    250.61x = 345.94 × 157.57
  4. Step 4: Simplify right side
    250.61x = 54,508.51
  5. Step 5: Solve for x
    x = 54,508.51/250.61
  6. Step 6: Final answer
    x = 217.51

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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.