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Finding the Fourth Proportional to 432.03, 648.05 and 249.32

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Solution

The fourth proportional to 432.03, 648.05 and 249.32 is: 373.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.03 : 648.05 = 249.32 : x
  2. Step 2: Convert to fraction form
    432.03/648.05 = 249.32/x
  3. Step 3: Cross multiply
    432.03x = 648.05 × 249.32
  4. Step 4: Simplify right side
    432.03x = 161,567.34
  5. Step 5: Solve for x
    x = 161,567.34/432.03
  6. Step 6: Final answer
    x = 373.97

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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.