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Finding the Fourth Proportional to 479.78, 662.38 and 293.36

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Solution

The fourth proportional to 479.78, 662.38 and 293.36 is: 405.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.78 : 662.38 = 293.36 : x
  2. Step 2: Convert to fraction form
    479.78/662.38 = 293.36/x
  3. Step 3: Cross multiply
    479.78x = 662.38 × 293.36
  4. Step 4: Simplify right side
    479.78x = 194,315.80
  5. Step 5: Solve for x
    x = 194,315.80/479.78
  6. Step 6: Final answer
    x = 405.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.