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Finding the Fourth Proportional to 479.68, 718.80 and 333.28

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Solution

The fourth proportional to 479.68, 718.80 and 333.28 is: 499.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.68 : 718.80 = 333.28 : x
  2. Step 2: Convert to fraction form
    479.68/718.80 = 333.28/x
  3. Step 3: Cross multiply
    479.68x = 718.80 × 333.28
  4. Step 4: Simplify right side
    479.68x = 239,561.66
  5. Step 5: Solve for x
    x = 239,561.66/479.68
  6. Step 6: Final answer
    x = 499.42

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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.