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Finding the Fourth Proportional to 300.71, 413.10 and 245.30

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Solution

The fourth proportional to 300.71, 413.10 and 245.30 is: 336.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.71 : 413.10 = 245.30 : x
  2. Step 2: Convert to fraction form
    300.71/413.10 = 245.30/x
  3. Step 3: Cross multiply
    300.71x = 413.10 × 245.30
  4. Step 4: Simplify right side
    300.71x = 101,331.36
  5. Step 5: Solve for x
    x = 101,331.36/300.71
  6. Step 6: Final answer
    x = 336.97

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.