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Finding the Fourth Proportional to 274.29, 378.30 and 176.05

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Solution

The fourth proportional to 274.29, 378.30 and 176.05 is: 242.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.29 : 378.30 = 176.05 : x
  2. Step 2: Convert to fraction form
    274.29/378.30 = 176.05/x
  3. Step 3: Cross multiply
    274.29x = 378.30 × 176.05
  4. Step 4: Simplify right side
    274.29x = 66,599.72
  5. Step 5: Solve for x
    x = 66,599.72/274.29
  6. Step 6: Final answer
    x = 242.81

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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.