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Finding the Fourth Proportional to 447.62, 671.42 and 435.47

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Solution

The fourth proportional to 447.62, 671.42 and 435.47 is: 653.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.62 : 671.42 = 435.47 : x
  2. Step 2: Convert to fraction form
    447.62/671.42 = 435.47/x
  3. Step 3: Cross multiply
    447.62x = 671.42 × 435.47
  4. Step 4: Simplify right side
    447.62x = 292,381.00
  5. Step 5: Solve for x
    x = 292,381.00/447.62
  6. Step 6: Final answer
    x = 653.20

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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.