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Finding the Fourth Proportional to 244.11, 336.78 and 156.72

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Solution

The fourth proportional to 244.11, 336.78 and 156.72 is: 216.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    244.11 : 336.78 = 156.72 : x
  2. Step 2: Convert to fraction form
    244.11/336.78 = 156.72/x
  3. Step 3: Cross multiply
    244.11x = 336.78 × 156.72
  4. Step 4: Simplify right side
    244.11x = 52,780.16
  5. Step 5: Solve for x
    x = 52,780.16/244.11
  6. Step 6: Final answer
    x = 216.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.