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Finding the Fourth Proportional to 114.86, 158.46 and 68.25

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Solution

The fourth proportional to 114.86, 158.46 and 68.25 is: 94.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.86 : 158.46 = 68.25 : x
  2. Step 2: Convert to fraction form
    114.86/158.46 = 68.25/x
  3. Step 3: Cross multiply
    114.86x = 158.46 × 68.25
  4. Step 4: Simplify right side
    114.86x = 10,814.90
  5. Step 5: Solve for x
    x = 10,814.90/114.86
  6. Step 6: Final answer
    x = 94.16

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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.