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Finding the Fourth Proportional to 449.20, 671.39 and 352

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Solution

The fourth proportional to 449.20, 671.39 and 352 is: 526.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.20 : 671.39 = 352 : x
  2. Step 2: Convert to fraction form
    449.20/671.39 = 352/x
  3. Step 3: Cross multiply
    449.20x = 671.39 × 352
  4. Step 4: Simplify right side
    449.20x = 236,329.28
  5. Step 5: Solve for x
    x = 236,329.28/449.20
  6. Step 6: Final answer
    x = 526.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.