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Finding the Fourth Proportional to 581.99, 871.26 and 399.03

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Solution

The fourth proportional to 581.99, 871.26 and 399.03 is: 597.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.99 : 871.26 = 399.03 : x
  2. Step 2: Convert to fraction form
    581.99/871.26 = 399.03/x
  3. Step 3: Cross multiply
    581.99x = 871.26 × 399.03
  4. Step 4: Simplify right side
    581.99x = 347,654.11
  5. Step 5: Solve for x
    x = 347,654.11/581.99
  6. Step 6: Final answer
    x = 597.36

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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.