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Finding the Fourth Proportional to 551.20, 825.60 and 368.32

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Solution

The fourth proportional to 551.20, 825.60 and 368.32 is: 551.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.20 : 825.60 = 368.32 : x
  2. Step 2: Convert to fraction form
    551.20/825.60 = 368.32/x
  3. Step 3: Cross multiply
    551.20x = 825.60 × 368.32
  4. Step 4: Simplify right side
    551.20x = 304,084.99
  5. Step 5: Solve for x
    x = 304,084.99/551.20
  6. Step 6: Final answer
    x = 551.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.