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Finding the Fourth Proportional to 369.36, 551.07 and 308.61

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Solution

The fourth proportional to 369.36, 551.07 and 308.61 is: 460.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.36 : 551.07 = 308.61 : x
  2. Step 2: Convert to fraction form
    369.36/551.07 = 308.61/x
  3. Step 3: Cross multiply
    369.36x = 551.07 × 308.61
  4. Step 4: Simplify right side
    369.36x = 170,065.71
  5. Step 5: Solve for x
    x = 170,065.71/369.36
  6. Step 6: Final answer
    x = 460.43

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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.