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Finding the Fourth Proportional to 158.37, 217.26 and 154.32

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Solution

The fourth proportional to 158.37, 217.26 and 154.32 is: 211.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.37 : 217.26 = 154.32 : x
  2. Step 2: Convert to fraction form
    158.37/217.26 = 154.32/x
  3. Step 3: Cross multiply
    158.37x = 217.26 × 154.32
  4. Step 4: Simplify right side
    158.37x = 33,527.56
  5. Step 5: Solve for x
    x = 33,527.56/158.37
  6. Step 6: Final answer
    x = 211.70

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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.