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Finding the Fourth Proportional to 368.04, 551.68 and 213.71

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Solution

The fourth proportional to 368.04, 551.68 and 213.71 is: 320.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.04 : 551.68 = 213.71 : x
  2. Step 2: Convert to fraction form
    368.04/551.68 = 213.71/x
  3. Step 3: Cross multiply
    368.04x = 551.68 × 213.71
  4. Step 4: Simplify right side
    368.04x = 117,896.24
  5. Step 5: Solve for x
    x = 117,896.24/368.04
  6. Step 6: Final answer
    x = 320.33

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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.