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Finding the Fourth Proportional to 274.34, 380.54 and 259.76

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Solution

The fourth proportional to 274.34, 380.54 and 259.76 is: 360.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.34 : 380.54 = 259.76 : x
  2. Step 2: Convert to fraction form
    274.34/380.54 = 259.76/x
  3. Step 3: Cross multiply
    274.34x = 380.54 × 259.76
  4. Step 4: Simplify right side
    274.34x = 98,849.07
  5. Step 5: Solve for x
    x = 98,849.07/274.34
  6. Step 6: Final answer
    x = 360.32

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.