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Finding the Fourth Proportional to 437.34, 603.46 and 279.71

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Solution

The fourth proportional to 437.34, 603.46 and 279.71 is: 385.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.34 : 603.46 = 279.71 : x
  2. Step 2: Convert to fraction form
    437.34/603.46 = 279.71/x
  3. Step 3: Cross multiply
    437.34x = 603.46 × 279.71
  4. Step 4: Simplify right side
    437.34x = 168,793.80
  5. Step 5: Solve for x
    x = 168,793.80/437.34
  6. Step 6: Final answer
    x = 385.96

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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.