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Finding the Fourth Proportional to 114.76, 158.37 and 79.93

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Solution

The fourth proportional to 114.76, 158.37 and 79.93 is: 110.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.76 : 158.37 = 79.93 : x
  2. Step 2: Convert to fraction form
    114.76/158.37 = 79.93/x
  3. Step 3: Cross multiply
    114.76x = 158.37 × 79.93
  4. Step 4: Simplify right side
    114.76x = 12,657.72
  5. Step 5: Solve for x
    x = 12,657.72/114.76
  6. Step 6: Final answer
    x = 110.30

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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.