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Finding the Fourth Proportional to 263.20, 363.22 and 152.68

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Solution

The fourth proportional to 263.20, 363.22 and 152.68 is: 210.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.20 : 363.22 = 152.68 : x
  2. Step 2: Convert to fraction form
    263.20/363.22 = 152.68/x
  3. Step 3: Cross multiply
    263.20x = 363.22 × 152.68
  4. Step 4: Simplify right side
    263.20x = 55,454.80
  5. Step 5: Solve for x
    x = 55,454.80/263.20
  6. Step 6: Final answer
    x = 210.70

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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.