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Finding the Fourth Proportional to 448.82, 672.66 and 205.35

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Solution

The fourth proportional to 448.82, 672.66 and 205.35 is: 307.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.82 : 672.66 = 205.35 : x
  2. Step 2: Convert to fraction form
    448.82/672.66 = 205.35/x
  3. Step 3: Cross multiply
    448.82x = 672.66 × 205.35
  4. Step 4: Simplify right side
    448.82x = 138,130.73
  5. Step 5: Solve for x
    x = 138,130.73/448.82
  6. Step 6: Final answer
    x = 307.76

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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.