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Finding the Fourth Proportional to 368.39, 551.88 and 212.03

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Solution

The fourth proportional to 368.39, 551.88 and 212.03 is: 317.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.39 : 551.88 = 212.03 : x
  2. Step 2: Convert to fraction form
    368.39/551.88 = 212.03/x
  3. Step 3: Cross multiply
    368.39x = 551.88 × 212.03
  4. Step 4: Simplify right side
    368.39x = 117,012.36
  5. Step 5: Solve for x
    x = 117,012.36/368.39
  6. Step 6: Final answer
    x = 317.64

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