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Finding the Fourth Proportional to 565.90, 849.09 and 520.49

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Solution

The fourth proportional to 565.90, 849.09 and 520.49 is: 780.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.90 : 849.09 = 520.49 : x
  2. Step 2: Convert to fraction form
    565.90/849.09 = 520.49/x
  3. Step 3: Cross multiply
    565.90x = 849.09 × 520.49
  4. Step 4: Simplify right side
    565.90x = 441,940.25
  5. Step 5: Solve for x
    x = 441,940.25/565.90
  6. Step 6: Final answer
    x = 780.95

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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.