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Finding the Fourth Proportional to 157.14, 216.86 and 94.95

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Solution

The fourth proportional to 157.14, 216.86 and 94.95 is: 131.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    157.14 : 216.86 = 94.95 : x
  2. Step 2: Convert to fraction form
    157.14/216.86 = 94.95/x
  3. Step 3: Cross multiply
    157.14x = 216.86 × 94.95
  4. Step 4: Simplify right side
    157.14x = 20,590.38
  5. Step 5: Solve for x
    x = 20,590.38/157.14
  6. Step 6: Final answer
    x = 131.03

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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.