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Finding the Fourth Proportional to 379.76, 520.56 and 373.38

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Solution

The fourth proportional to 379.76, 520.56 and 373.38 is: 511.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.76 : 520.56 = 373.38 : x
  2. Step 2: Convert to fraction form
    379.76/520.56 = 373.38/x
  3. Step 3: Cross multiply
    379.76x = 520.56 × 373.38
  4. Step 4: Simplify right side
    379.76x = 194,366.69
  5. Step 5: Solve for x
    x = 194,366.69/379.76
  6. Step 6: Final answer
    x = 511.81

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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.