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Finding the Fourth Proportional to 276.05, 413.82 and 93.40

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Solution

The fourth proportional to 276.05, 413.82 and 93.40 is: 140.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.05 : 413.82 = 93.40 : x
  2. Step 2: Convert to fraction form
    276.05/413.82 = 93.40/x
  3. Step 3: Cross multiply
    276.05x = 413.82 × 93.40
  4. Step 4: Simplify right side
    276.05x = 38,650.79
  5. Step 5: Solve for x
    x = 38,650.79/276.05
  6. Step 6: Final answer
    x = 140.01

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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.