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Finding the Fourth Proportional to 479.05, 713.75 and 447.62

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Solution

The fourth proportional to 479.05, 713.75 and 447.62 is: 666.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.05 : 713.75 = 447.62 : x
  2. Step 2: Convert to fraction form
    479.05/713.75 = 447.62/x
  3. Step 3: Cross multiply
    479.05x = 713.75 × 447.62
  4. Step 4: Simplify right side
    479.05x = 319,486.33
  5. Step 5: Solve for x
    x = 319,486.33/479.05
  6. Step 6: Final answer
    x = 666.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.