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Finding the Fourth Proportional to 115.77, 160.83 and 114.71

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Solution

The fourth proportional to 115.77, 160.83 and 114.71 is: 159.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    115.77 : 160.83 = 114.71 : x
  2. Step 2: Convert to fraction form
    115.77/160.83 = 114.71/x
  3. Step 3: Cross multiply
    115.77x = 160.83 × 114.71
  4. Step 4: Simplify right side
    115.77x = 18,448.12
  5. Step 5: Solve for x
    x = 18,448.12/115.77
  6. Step 6: Final answer
    x = 159.36

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.