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Finding the Fourth Proportional to 114.94, 171.46 and 102.79

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Solution

The fourth proportional to 114.94, 171.46 and 102.79 is: 153.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.94 : 171.46 = 102.79 : x
  2. Step 2: Convert to fraction form
    114.94/171.46 = 102.79/x
  3. Step 3: Cross multiply
    114.94x = 171.46 × 102.79
  4. Step 4: Simplify right side
    114.94x = 17,624.37
  5. Step 5: Solve for x
    x = 17,624.37/114.94
  6. Step 6: Final answer
    x = 153.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.