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Finding the Fourth Proportional to 277.18, 413.79 and 240.74

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Solution

The fourth proportional to 277.18, 413.79 and 240.74 is: 359.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.18 : 413.79 = 240.74 : x
  2. Step 2: Convert to fraction form
    277.18/413.79 = 240.74/x
  3. Step 3: Cross multiply
    277.18x = 413.79 × 240.74
  4. Step 4: Simplify right side
    277.18x = 99,615.80
  5. Step 5: Solve for x
    x = 99,615.80/277.18
  6. Step 6: Final answer
    x = 359.39

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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.