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Finding the Fourth Proportional to 432.38, 651.28 and 352.20

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Solution

The fourth proportional to 432.38, 651.28 and 352.20 is: 530.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.38 : 651.28 = 352.20 : x
  2. Step 2: Convert to fraction form
    432.38/651.28 = 352.20/x
  3. Step 3: Cross multiply
    432.38x = 651.28 × 352.20
  4. Step 4: Simplify right side
    432.38x = 229,380.82
  5. Step 5: Solve for x
    x = 229,380.82/432.38
  6. Step 6: Final answer
    x = 530.51

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.