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Finding the Fourth Proportional to 522.02, 783.33 and 213.82

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Solution

The fourth proportional to 522.02, 783.33 and 213.82 is: 320.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.02 : 783.33 = 213.82 : x
  2. Step 2: Convert to fraction form
    522.02/783.33 = 213.82/x
  3. Step 3: Cross multiply
    522.02x = 783.33 × 213.82
  4. Step 4: Simplify right side
    522.02x = 167,491.62
  5. Step 5: Solve for x
    x = 167,491.62/522.02
  6. Step 6: Final answer
    x = 320.85

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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.