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Finding the Fourth Proportional to 274.07, 411.08 and 68.63

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Solution

The fourth proportional to 274.07, 411.08 and 68.63 is: 102.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.07 : 411.08 = 68.63 : x
  2. Step 2: Convert to fraction form
    274.07/411.08 = 68.63/x
  3. Step 3: Cross multiply
    274.07x = 411.08 × 68.63
  4. Step 4: Simplify right side
    274.07x = 28,210.02
  5. Step 5: Solve for x
    x = 28,210.02/274.07
  6. Step 6: Final answer
    x = 102.93

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Why These Related Problems?

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