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Finding the Fourth Proportional to 448.01, 672.44 and 423.35

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Solution

The fourth proportional to 448.01, 672.44 and 423.35 is: 635.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.01 : 672.44 = 423.35 : x
  2. Step 2: Convert to fraction form
    448.01/672.44 = 423.35/x
  3. Step 3: Cross multiply
    448.01x = 672.44 × 423.35
  4. Step 4: Simplify right side
    448.01x = 284,677.47
  5. Step 5: Solve for x
    x = 284,677.47/448.01
  6. Step 6: Final answer
    x = 635.43

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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.