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Finding the Fourth Proportional to 244.87, 365.40 and 218.91

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Solution

The fourth proportional to 244.87, 365.40 and 218.91 is: 326.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    244.87 : 365.40 = 218.91 : x
  2. Step 2: Convert to fraction form
    244.87/365.40 = 218.91/x
  3. Step 3: Cross multiply
    244.87x = 365.40 × 218.91
  4. Step 4: Simplify right side
    244.87x = 79,989.16
  5. Step 5: Solve for x
    x = 79,989.16/244.87
  6. Step 6: Final answer
    x = 326.66

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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.