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Finding the Fourth Proportional to 250.58, 345.76 and 157.30

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Solution

The fourth proportional to 250.58, 345.76 and 157.30 is: 217.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.58 : 345.76 = 157.30 : x
  2. Step 2: Convert to fraction form
    250.58/345.76 = 157.30/x
  3. Step 3: Cross multiply
    250.58x = 345.76 × 157.30
  4. Step 4: Simplify right side
    250.58x = 54,388.05
  5. Step 5: Solve for x
    x = 54,388.05/250.58
  6. Step 6: Final answer
    x = 217.05

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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.