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Finding the Fourth Proportional to 413.28, 616.95 and 367.92

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Solution

The fourth proportional to 413.28, 616.95 and 367.92 is: 549.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.28 : 616.95 = 367.92 : x
  2. Step 2: Convert to fraction form
    413.28/616.95 = 367.92/x
  3. Step 3: Cross multiply
    413.28x = 616.95 × 367.92
  4. Step 4: Simplify right side
    413.28x = 226,988.24
  5. Step 5: Solve for x
    x = 226,988.24/413.28
  6. Step 6: Final answer
    x = 549.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.