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Finding the Fourth Proportional to 429.77, 641.52 and 369.29

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Solution

The fourth proportional to 429.77, 641.52 and 369.29 is: 551.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    429.77 : 641.52 = 369.29 : x
  2. Step 2: Convert to fraction form
    429.77/641.52 = 369.29/x
  3. Step 3: Cross multiply
    429.77x = 641.52 × 369.29
  4. Step 4: Simplify right side
    429.77x = 236,906.92
  5. Step 5: Solve for x
    x = 236,906.92/429.77
  6. Step 6: Final answer
    x = 551.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.