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Finding the Fourth Proportional to 250.79, 345.95 and 162.20

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Solution

The fourth proportional to 250.79, 345.95 and 162.20 is: 223.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.79 : 345.95 = 162.20 : x
  2. Step 2: Convert to fraction form
    250.79/345.95 = 162.20/x
  3. Step 3: Cross multiply
    250.79x = 345.95 × 162.20
  4. Step 4: Simplify right side
    250.79x = 56,110.55
  5. Step 5: Solve for x
    x = 56,110.55/250.79
  6. Step 6: Final answer
    x = 223.74

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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.