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Finding the Fourth Proportional to 244.28, 336.90 and 156.76

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Solution

The fourth proportional to 244.28, 336.90 and 156.76 is: 216.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    244.28 : 336.90 = 156.76 : x
  2. Step 2: Convert to fraction form
    244.28/336.90 = 156.76/x
  3. Step 3: Cross multiply
    244.28x = 336.90 × 156.76
  4. Step 4: Simplify right side
    244.28x = 52,812.44
  5. Step 5: Solve for x
    x = 52,812.44/244.28
  6. Step 6: Final answer
    x = 216.20

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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.