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Finding the Fourth Proportional to 362.70, 543.94 and 157.22

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Solution

The fourth proportional to 362.70, 543.94 and 157.22 is: 235.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.70 : 543.94 = 157.22 : x
  2. Step 2: Convert to fraction form
    362.70/543.94 = 157.22/x
  3. Step 3: Cross multiply
    362.70x = 543.94 × 157.22
  4. Step 4: Simplify right side
    362.70x = 85,518.25
  5. Step 5: Solve for x
    x = 85,518.25/362.70
  6. Step 6: Final answer
    x = 235.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.