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Finding the Fourth Proportional to 349.86, 525 and 187.56

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Solution

The fourth proportional to 349.86, 525 and 187.56 is: 281.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.86 : 525 = 187.56 : x
  2. Step 2: Convert to fraction form
    349.86/525 = 187.56/x
  3. Step 3: Cross multiply
    349.86x = 525 × 187.56
  4. Step 4: Simplify right side
    349.86x = 98,469
  5. Step 5: Solve for x
    x = 98,469/349.86
  6. Step 6: Final answer
    x = 281.45

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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.