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Finding the Fourth Proportional to 366.48, 551.93 and 321.39

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Solution

The fourth proportional to 366.48, 551.93 and 321.39 is: 484.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.48 : 551.93 = 321.39 : x
  2. Step 2: Convert to fraction form
    366.48/551.93 = 321.39/x
  3. Step 3: Cross multiply
    366.48x = 551.93 × 321.39
  4. Step 4: Simplify right side
    366.48x = 177,383.18
  5. Step 5: Solve for x
    x = 177,383.18/366.48
  6. Step 6: Final answer
    x = 484.02

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.