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Finding the Fourth Proportional to 296.84, 408.74 and 279.52

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Solution

The fourth proportional to 296.84, 408.74 and 279.52 is: 384.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.84 : 408.74 = 279.52 : x
  2. Step 2: Convert to fraction form
    296.84/408.74 = 279.52/x
  3. Step 3: Cross multiply
    296.84x = 408.74 × 279.52
  4. Step 4: Simplify right side
    296.84x = 114,250.68
  5. Step 5: Solve for x
    x = 114,250.68/296.84
  6. Step 6: Final answer
    x = 384.90

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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.