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Finding the Fourth Proportional to 522.36, 783.89 and 480.65

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Solution

The fourth proportional to 522.36, 783.89 and 480.65 is: 721.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.36 : 783.89 = 480.65 : x
  2. Step 2: Convert to fraction form
    522.36/783.89 = 480.65/x
  3. Step 3: Cross multiply
    522.36x = 783.89 × 480.65
  4. Step 4: Simplify right side
    522.36x = 376,770.41
  5. Step 5: Solve for x
    x = 376,770.41/522.36
  6. Step 6: Final answer
    x = 721.28

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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.