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Finding the Fourth Proportional to 274.66, 411.72 and 130.48

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Solution

The fourth proportional to 274.66, 411.72 and 130.48 is: 195.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.66 : 411.72 = 130.48 : x
  2. Step 2: Convert to fraction form
    274.66/411.72 = 130.48/x
  3. Step 3: Cross multiply
    274.66x = 411.72 × 130.48
  4. Step 4: Simplify right side
    274.66x = 53,721.23
  5. Step 5: Solve for x
    x = 53,721.23/274.66
  6. Step 6: Final answer
    x = 195.59

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