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Finding the Fourth Proportional to 368.42, 552.71 and 185.74

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Solution

The fourth proportional to 368.42, 552.71 and 185.74 is: 278.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.42 : 552.71 = 185.74 : x
  2. Step 2: Convert to fraction form
    368.42/552.71 = 185.74/x
  3. Step 3: Cross multiply
    368.42x = 552.71 × 185.74
  4. Step 4: Simplify right side
    368.42x = 102,660.36
  5. Step 5: Solve for x
    x = 102,660.36/368.42
  6. Step 6: Final answer
    x = 278.65

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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.