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Finding the Fourth Proportional to 369.24, 551.21 and 356.43

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Solution

The fourth proportional to 369.24, 551.21 and 356.43 is: 532.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.24 : 551.21 = 356.43 : x
  2. Step 2: Convert to fraction form
    369.24/551.21 = 356.43/x
  3. Step 3: Cross multiply
    369.24x = 551.21 × 356.43
  4. Step 4: Simplify right side
    369.24x = 196,465.02
  5. Step 5: Solve for x
    x = 196,465.02/369.24
  6. Step 6: Final answer
    x = 532.09

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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.