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Finding the Fourth Proportional to 522.01, 720.31 and 300.92

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Solution

The fourth proportional to 522.01, 720.31 and 300.92 is: 415.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.01 : 720.31 = 300.92 : x
  2. Step 2: Convert to fraction form
    522.01/720.31 = 300.92/x
  3. Step 3: Cross multiply
    522.01x = 720.31 × 300.92
  4. Step 4: Simplify right side
    522.01x = 216,751.90
  5. Step 5: Solve for x
    x = 216,751.90/522.01
  6. Step 6: Final answer
    x = 415.22

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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.