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Finding the Fourth Proportional to 191.95, 264.90 and 109.06

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Solution

The fourth proportional to 191.95, 264.90 and 109.06 is: 150.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.95 : 264.90 = 109.06 : x
  2. Step 2: Convert to fraction form
    191.95/264.90 = 109.06/x
  3. Step 3: Cross multiply
    191.95x = 264.90 × 109.06
  4. Step 4: Simplify right side
    191.95x = 28,890.66
  5. Step 5: Solve for x
    x = 28,890.66/191.95
  6. Step 6: Final answer
    x = 150.51

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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.