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Finding the Fourth Proportional to 247.55, 370.67 and 144.87

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Solution

The fourth proportional to 247.55, 370.67 and 144.87 is: 216.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.55 : 370.67 = 144.87 : x
  2. Step 2: Convert to fraction form
    247.55/370.67 = 144.87/x
  3. Step 3: Cross multiply
    247.55x = 370.67 × 144.87
  4. Step 4: Simplify right side
    247.55x = 53,698.24
  5. Step 5: Solve for x
    x = 53,698.24/247.55
  6. Step 6: Final answer
    x = 216.92

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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.