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Finding the Fourth Proportional to 368.05, 551.69 and 230.78

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Solution

The fourth proportional to 368.05, 551.69 and 230.78 is: 345.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.05 : 551.69 = 230.78 : x
  2. Step 2: Convert to fraction form
    368.05/551.69 = 230.78/x
  3. Step 3: Cross multiply
    368.05x = 551.69 × 230.78
  4. Step 4: Simplify right side
    368.05x = 127,319.02
  5. Step 5: Solve for x
    x = 127,319.02/368.05
  6. Step 6: Final answer
    x = 345.93

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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.