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Finding the Fourth Proportional to 479.33, 717.62 and 355.70

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Solution

The fourth proportional to 479.33, 717.62 and 355.70 is: 532.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.33 : 717.62 = 355.70 : x
  2. Step 2: Convert to fraction form
    479.33/717.62 = 355.70/x
  3. Step 3: Cross multiply
    479.33x = 717.62 × 355.70
  4. Step 4: Simplify right side
    479.33x = 255,257.43
  5. Step 5: Solve for x
    x = 255,257.43/479.33
  6. Step 6: Final answer
    x = 532.53

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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.