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Finding the Fourth Proportional to 191.94, 265.05 and 148.56

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Solution

The fourth proportional to 191.94, 265.05 and 148.56 is: 205.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.94 : 265.05 = 148.56 : x
  2. Step 2: Convert to fraction form
    191.94/265.05 = 148.56/x
  3. Step 3: Cross multiply
    191.94x = 265.05 × 148.56
  4. Step 4: Simplify right side
    191.94x = 39,375.83
  5. Step 5: Solve for x
    x = 39,375.83/191.94
  6. Step 6: Final answer
    x = 205.15

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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.