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Finding the Fourth Proportional to 342.02, 471.97 and 186.74

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Solution

The fourth proportional to 342.02, 471.97 and 186.74 is: 257.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.02 : 471.97 = 186.74 : x
  2. Step 2: Convert to fraction form
    342.02/471.97 = 186.74/x
  3. Step 3: Cross multiply
    342.02x = 471.97 × 186.74
  4. Step 4: Simplify right side
    342.02x = 88,135.68
  5. Step 5: Solve for x
    x = 88,135.68/342.02
  6. Step 6: Final answer
    x = 257.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.