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Finding the Fourth Proportional to 191.65, 264.75 and 148.54

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Solution

The fourth proportional to 191.65, 264.75 and 148.54 is: 205.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.65 : 264.75 = 148.54 : x
  2. Step 2: Convert to fraction form
    191.65/264.75 = 148.54/x
  3. Step 3: Cross multiply
    191.65x = 264.75 × 148.54
  4. Step 4: Simplify right side
    191.65x = 39,325.97
  5. Step 5: Solve for x
    x = 39,325.97/191.65
  6. Step 6: Final answer
    x = 205.20

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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.