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Finding the Fourth Proportional to 341.81, 512.90 and 187.86

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Solution

The fourth proportional to 341.81, 512.90 and 187.86 is: 281.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.81 : 512.90 = 187.86 : x
  2. Step 2: Convert to fraction form
    341.81/512.90 = 187.86/x
  3. Step 3: Cross multiply
    341.81x = 512.90 × 187.86
  4. Step 4: Simplify right side
    341.81x = 96,352.45
  5. Step 5: Solve for x
    x = 96,352.45/341.81
  6. Step 6: Final answer
    x = 281.89

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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.