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Finding the Fourth Proportional to 275.64, 413.61 and 153.83

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Solution

The fourth proportional to 275.64, 413.61 and 153.83 is: 230.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.64 : 413.61 = 153.83 : x
  2. Step 2: Convert to fraction form
    275.64/413.61 = 153.83/x
  3. Step 3: Cross multiply
    275.64x = 413.61 × 153.83
  4. Step 4: Simplify right side
    275.64x = 63,626.08
  5. Step 5: Solve for x
    x = 63,626.08/275.64
  6. Step 6: Final answer
    x = 230.83

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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.