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Finding the Fourth Proportional to 368.73, 551.90 and 231.87

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Solution

The fourth proportional to 368.73, 551.90 and 231.87 is: 347.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.73 : 551.90 = 231.87 : x
  2. Step 2: Convert to fraction form
    368.73/551.90 = 231.87/x
  3. Step 3: Cross multiply
    368.73x = 551.90 × 231.87
  4. Step 4: Simplify right side
    368.73x = 127,967.89
  5. Step 5: Solve for x
    x = 127,967.89/368.73
  6. Step 6: Final answer
    x = 347.05

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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.