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Finding the Fourth Proportional to 377.99, 521.28 and 339.26

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Solution

The fourth proportional to 377.99, 521.28 and 339.26 is: 467.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.99 : 521.28 = 339.26 : x
  2. Step 2: Convert to fraction form
    377.99/521.28 = 339.26/x
  3. Step 3: Cross multiply
    377.99x = 521.28 × 339.26
  4. Step 4: Simplify right side
    377.99x = 176,846.85
  5. Step 5: Solve for x
    x = 176,846.85/377.99
  6. Step 6: Final answer
    x = 467.87

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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.