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Finding the Fourth Proportional to 522.23, 720.67 and 286.17

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Solution

The fourth proportional to 522.23, 720.67 and 286.17 is: 394.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.23 : 720.67 = 286.17 : x
  2. Step 2: Convert to fraction form
    522.23/720.67 = 286.17/x
  3. Step 3: Cross multiply
    522.23x = 720.67 × 286.17
  4. Step 4: Simplify right side
    522.23x = 206,235.22
  5. Step 5: Solve for x
    x = 206,235.22/522.23
  6. Step 6: Final answer
    x = 394.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.