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Finding the Fourth Proportional to 379.99, 520.96 and 373.07

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Solution

The fourth proportional to 379.99, 520.96 and 373.07 is: 511.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.99 : 520.96 = 373.07 : x
  2. Step 2: Convert to fraction form
    379.99/520.96 = 373.07/x
  3. Step 3: Cross multiply
    379.99x = 520.96 × 373.07
  4. Step 4: Simplify right side
    379.99x = 194,351.94
  5. Step 5: Solve for x
    x = 194,351.94/379.99
  6. Step 6: Final answer
    x = 511.47

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.