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Finding the Fourth Proportional to 479.60, 715.92 and 444

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Solution

The fourth proportional to 479.60, 715.92 and 444 is: 662.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.60 : 715.92 = 444 : x
  2. Step 2: Convert to fraction form
    479.60/715.92 = 444/x
  3. Step 3: Cross multiply
    479.60x = 715.92 × 444
  4. Step 4: Simplify right side
    479.60x = 317,868.48
  5. Step 5: Solve for x
    x = 317,868.48/479.60
  6. Step 6: Final answer
    x = 662.78

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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.