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Finding the Fourth Proportional to 432.82, 648.71 and 330.30

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Solution

The fourth proportional to 432.82, 648.71 and 330.30 is: 495.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.82 : 648.71 = 330.30 : x
  2. Step 2: Convert to fraction form
    432.82/648.71 = 330.30/x
  3. Step 3: Cross multiply
    432.82x = 648.71 × 330.30
  4. Step 4: Simplify right side
    432.82x = 214,268.50
  5. Step 5: Solve for x
    x = 214,268.50/432.82
  6. Step 6: Final answer
    x = 495.06

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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.