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Finding the Fourth Proportional to 276.16, 413.42 and 264.28

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Solution

The fourth proportional to 276.16, 413.42 and 264.28 is: 395.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.16 : 413.42 = 264.28 : x
  2. Step 2: Convert to fraction form
    276.16/413.42 = 264.28/x
  3. Step 3: Cross multiply
    276.16x = 413.42 × 264.28
  4. Step 4: Simplify right side
    276.16x = 109,256.57
  5. Step 5: Solve for x
    x = 109,256.57/276.16
  6. Step 6: Final answer
    x = 395.63

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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.