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Finding the Fourth Proportional to 263.28, 363.30 and 152.74

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Solution

The fourth proportional to 263.28, 363.30 and 152.74 is: 210.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.28 : 363.30 = 152.74 : x
  2. Step 2: Convert to fraction form
    263.28/363.30 = 152.74/x
  3. Step 3: Cross multiply
    263.28x = 363.30 × 152.74
  4. Step 4: Simplify right side
    263.28x = 55,488.92
  5. Step 5: Solve for x
    x = 55,488.92/263.28
  6. Step 6: Final answer
    x = 210.76

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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.