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Finding the Fourth Proportional to 448.00, 672.10 and 135.68

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Solution

The fourth proportional to 448.00, 672.10 and 135.68 is: 203.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.00 : 672.10 = 135.68 : x
  2. Step 2: Convert to fraction form
    448.00/672.10 = 135.68/x
  3. Step 3: Cross multiply
    448.00x = 672.10 × 135.68
  4. Step 4: Simplify right side
    448.00x = 91,186.83
  5. Step 5: Solve for x
    x = 91,186.83/448.00
  6. Step 6: Final answer
    x = 203.54

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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.