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Finding the Fourth Proportional to 605.66, 839.75 and 572.85

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Solution

The fourth proportional to 605.66, 839.75 and 572.85 is: 794.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.66 : 839.75 = 572.85 : x
  2. Step 2: Convert to fraction form
    605.66/839.75 = 572.85/x
  3. Step 3: Cross multiply
    605.66x = 839.75 × 572.85
  4. Step 4: Simplify right side
    605.66x = 481,047.92
  5. Step 5: Solve for x
    x = 481,047.92/605.66
  6. Step 6: Final answer
    x = 794.26

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.