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Finding the Fourth Proportional to 276.39, 377.70 and 263.61

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Solution

The fourth proportional to 276.39, 377.70 and 263.61 is: 360.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.39 : 377.70 = 263.61 : x
  2. Step 2: Convert to fraction form
    276.39/377.70 = 263.61/x
  3. Step 3: Cross multiply
    276.39x = 377.70 × 263.61
  4. Step 4: Simplify right side
    276.39x = 99,565.50
  5. Step 5: Solve for x
    x = 99,565.50/276.39
  6. Step 6: Final answer
    x = 360.24

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.