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Finding the Fourth Proportional to 107.91, 149.30 and 95.00

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Solution

The fourth proportional to 107.91, 149.30 and 95.00 is: 131.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.91 : 149.30 = 95.00 : x
  2. Step 2: Convert to fraction form
    107.91/149.30 = 95.00/x
  3. Step 3: Cross multiply
    107.91x = 149.30 × 95.00
  4. Step 4: Simplify right side
    107.91x = 14,182.28
  5. Step 5: Solve for x
    x = 14,182.28/107.91
  6. Step 6: Final answer
    x = 131.43

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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.