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Finding the Fourth Proportional to 446.66, 667.41 and 354.40

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Solution

The fourth proportional to 446.66, 667.41 and 354.40 is: 529.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.66 : 667.41 = 354.40 : x
  2. Step 2: Convert to fraction form
    446.66/667.41 = 354.40/x
  3. Step 3: Cross multiply
    446.66x = 667.41 × 354.40
  4. Step 4: Simplify right side
    446.66x = 236,531.97
  5. Step 5: Solve for x
    x = 236,531.97/446.66
  6. Step 6: Final answer
    x = 529.55

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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.