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Finding the Fourth Proportional to 1,217.57, 1,824.81 and 662.27

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Solution

The fourth proportional to 1,217.57, 1,824.81 and 662.27 is: 992.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.57 : 1,824.81 = 662.27 : x
  2. Step 2: Convert to fraction form
    1,217.57/1,824.81 = 662.27/x
  3. Step 3: Cross multiply
    1,217.57x = 1,824.81 × 662.27
  4. Step 4: Simplify right side
    1,217.57x = 1,208,507.79
  5. Step 5: Solve for x
    x = 1,208,507.79/1,217.57
  6. Step 6: Final answer
    x = 992.56

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1.5x scale

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.