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Finding the Fourth Proportional to 247, 370.58 and 125.16

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Solution

The fourth proportional to 247, 370.58 and 125.16 is: 187.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    247 : 370.58 = 125.16 : x
  2. Step 2: Convert to fraction form
    247/370.58 = 125.16/x
  3. Step 3: Cross multiply
    247x = 370.58 × 125.16
  4. Step 4: Simplify right side
    247x = 46,381.79
  5. Step 5: Solve for x
    x = 46,381.79/247
  6. Step 6: Final answer
    x = 187.78

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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.