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Finding the Fourth Proportional to 157.98, 236.86 and 106.62

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Solution

The fourth proportional to 157.98, 236.86 and 106.62 is: 159.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    157.98 : 236.86 = 106.62 : x
  2. Step 2: Convert to fraction form
    157.98/236.86 = 106.62/x
  3. Step 3: Cross multiply
    157.98x = 236.86 × 106.62
  4. Step 4: Simplify right side
    157.98x = 25,254.01
  5. Step 5: Solve for x
    x = 25,254.01/157.98
  6. Step 6: Final answer
    x = 159.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.