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Finding the Fourth Proportional to 399.58, 550.23 and 370.54

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Solution

The fourth proportional to 399.58, 550.23 and 370.54 is: 510.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.58 : 550.23 = 370.54 : x
  2. Step 2: Convert to fraction form
    399.58/550.23 = 370.54/x
  3. Step 3: Cross multiply
    399.58x = 550.23 × 370.54
  4. Step 4: Simplify right side
    399.58x = 203,882.22
  5. Step 5: Solve for x
    x = 203,882.22/399.58
  6. Step 6: Final answer
    x = 510.24

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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.