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Finding the Fourth Proportional to 151.00, 226.36 and 78.77

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Solution

The fourth proportional to 151.00, 226.36 and 78.77 is: 118.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.00 : 226.36 = 78.77 : x
  2. Step 2: Convert to fraction form
    151.00/226.36 = 78.77/x
  3. Step 3: Cross multiply
    151.00x = 226.36 × 78.77
  4. Step 4: Simplify right side
    151.00x = 17,831.04
  5. Step 5: Solve for x
    x = 17,831.04/151.00
  6. Step 6: Final answer
    x = 118.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.