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Finding the Fourth Proportional to 368.78, 552.66 and 173.75

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Solution

The fourth proportional to 368.78, 552.66 and 173.75 is: 260.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.78 : 552.66 = 173.75 : x
  2. Step 2: Convert to fraction form
    368.78/552.66 = 173.75/x
  3. Step 3: Cross multiply
    368.78x = 552.66 × 173.75
  4. Step 4: Simplify right side
    368.78x = 96,021.91
  5. Step 5: Solve for x
    x = 96,021.91/368.78
  6. Step 6: Final answer
    x = 260.38

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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.