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Finding the Fourth Proportional to 551.45, 760.97 and 330.41

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Solution

The fourth proportional to 551.45, 760.97 and 330.41 is: 455.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.45 : 760.97 = 330.41 : x
  2. Step 2: Convert to fraction form
    551.45/760.97 = 330.41/x
  3. Step 3: Cross multiply
    551.45x = 760.97 × 330.41
  4. Step 4: Simplify right side
    551.45x = 251,434.83
  5. Step 5: Solve for x
    x = 251,434.83/551.45
  6. Step 6: Final answer
    x = 455.95

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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.