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Finding the Fourth Proportional to 589.75, 811.99 and 571.12

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Solution

The fourth proportional to 589.75, 811.99 and 571.12 is: 786.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.75 : 811.99 = 571.12 : x
  2. Step 2: Convert to fraction form
    589.75/811.99 = 571.12/x
  3. Step 3: Cross multiply
    589.75x = 811.99 × 571.12
  4. Step 4: Simplify right side
    589.75x = 463,743.73
  5. Step 5: Solve for x
    x = 463,743.73/589.75
  6. Step 6: Final answer
    x = 786.34

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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.