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Finding the Fourth Proportional to 448.09, 672.13 and 140.01

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Solution

The fourth proportional to 448.09, 672.13 and 140.01 is: 210.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.09 : 672.13 = 140.01 : x
  2. Step 2: Convert to fraction form
    448.09/672.13 = 140.01/x
  3. Step 3: Cross multiply
    448.09x = 672.13 × 140.01
  4. Step 4: Simplify right side
    448.09x = 94,101.56
  5. Step 5: Solve for x
    x = 94,101.56/448.09
  6. Step 6: Final answer
    x = 210.01

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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.