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Finding the Fourth Proportional to 432.34, 649.14 and 270.70

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Solution

The fourth proportional to 432.34, 649.14 and 270.70 is: 406.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.34 : 649.14 = 270.70 : x
  2. Step 2: Convert to fraction form
    432.34/649.14 = 270.70/x
  3. Step 3: Cross multiply
    432.34x = 649.14 × 270.70
  4. Step 4: Simplify right side
    432.34x = 175,722.20
  5. Step 5: Solve for x
    x = 175,722.20/432.34
  6. Step 6: Final answer
    x = 406.44

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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.