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Finding the Fourth Proportional to 275.10, 413.22 and 265.87

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Solution

The fourth proportional to 275.10, 413.22 and 265.87 is: 399.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.10 : 413.22 = 265.87 : x
  2. Step 2: Convert to fraction form
    275.10/413.22 = 265.87/x
  3. Step 3: Cross multiply
    275.10x = 413.22 × 265.87
  4. Step 4: Simplify right side
    275.10x = 109,864.09
  5. Step 5: Solve for x
    x = 109,864.09/275.10
  6. Step 6: Final answer
    x = 399.36

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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.