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Finding the Fourth Proportional to 244.26, 336.60 and 156.78

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Solution

The fourth proportional to 244.26, 336.60 and 156.78 is: 216.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    244.26 : 336.60 = 156.78 : x
  2. Step 2: Convert to fraction form
    244.26/336.60 = 156.78/x
  3. Step 3: Cross multiply
    244.26x = 336.60 × 156.78
  4. Step 4: Simplify right side
    244.26x = 52,772.15
  5. Step 5: Solve for x
    x = 52,772.15/244.26
  6. Step 6: Final answer
    x = 216.05

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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.