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Finding the Fourth Proportional to 274.58, 409.68 and 268.35

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Solution

The fourth proportional to 274.58, 409.68 and 268.35 is: 400.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.58 : 409.68 = 268.35 : x
  2. Step 2: Convert to fraction form
    274.58/409.68 = 268.35/x
  3. Step 3: Cross multiply
    274.58x = 409.68 × 268.35
  4. Step 4: Simplify right side
    274.58x = 109,937.63
  5. Step 5: Solve for x
    x = 109,937.63/274.58
  6. Step 6: Final answer
    x = 400.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.