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Finding the Fourth Proportional to 157.70, 237.60 and 136.10

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Solution

The fourth proportional to 157.70, 237.60 and 136.10 is: 205.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    157.70 : 237.60 = 136.10 : x
  2. Step 2: Convert to fraction form
    157.70/237.60 = 136.10/x
  3. Step 3: Cross multiply
    157.70x = 237.60 × 136.10
  4. Step 4: Simplify right side
    157.70x = 32,336.68
  5. Step 5: Solve for x
    x = 32,336.68/157.70
  6. Step 6: Final answer
    x = 205.05

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.