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Finding the Fourth Proportional to 479.59, 718.44 and 248.20

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Solution

The fourth proportional to 479.59, 718.44 and 248.20 is: 371.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.59 : 718.44 = 248.20 : x
  2. Step 2: Convert to fraction form
    479.59/718.44 = 248.20/x
  3. Step 3: Cross multiply
    479.59x = 718.44 × 248.20
  4. Step 4: Simplify right side
    479.59x = 178,316.81
  5. Step 5: Solve for x
    x = 178,316.81/479.59
  6. Step 6: Final answer
    x = 371.81

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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.