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Finding the Fourth Proportional to 368.69, 553.12 and 331.93

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Solution

The fourth proportional to 368.69, 553.12 and 331.93 is: 497.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.69 : 553.12 = 331.93 : x
  2. Step 2: Convert to fraction form
    368.69/553.12 = 331.93/x
  3. Step 3: Cross multiply
    368.69x = 553.12 × 331.93
  4. Step 4: Simplify right side
    368.69x = 183,597.12
  5. Step 5: Solve for x
    x = 183,597.12/368.69
  6. Step 6: Final answer
    x = 497.97

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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.