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Finding the Fourth Proportional to 114.25, 157.76 and 75.51

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Solution

The fourth proportional to 114.25, 157.76 and 75.51 is: 104.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.25 : 157.76 = 75.51 : x
  2. Step 2: Convert to fraction form
    114.25/157.76 = 75.51/x
  3. Step 3: Cross multiply
    114.25x = 157.76 × 75.51
  4. Step 4: Simplify right side
    114.25x = 11,912.46
  5. Step 5: Solve for x
    x = 11,912.46/114.25
  6. Step 6: Final answer
    x = 104.27

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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.