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Finding the Fourth Proportional to 429.69, 591.61 and 379.15

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Solution

The fourth proportional to 429.69, 591.61 and 379.15 is: 522.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    429.69 : 591.61 = 379.15 : x
  2. Step 2: Convert to fraction form
    429.69/591.61 = 379.15/x
  3. Step 3: Cross multiply
    429.69x = 591.61 × 379.15
  4. Step 4: Simplify right side
    429.69x = 224,308.93
  5. Step 5: Solve for x
    x = 224,308.93/429.69
  6. Step 6: Final answer
    x = 522.03

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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.