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Finding the Fourth Proportional to 816.46, 1,222.62 and 700.36

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Solution

The fourth proportional to 816.46, 1,222.62 and 700.36 is: 1,048.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    816.46 : 1,222.62 = 700.36 : x
  2. Step 2: Convert to fraction form
    816.46/1,222.62 = 700.36/x
  3. Step 3: Cross multiply
    816.46x = 1,222.62 × 700.36
  4. Step 4: Simplify right side
    816.46x = 856,274.14
  5. Step 5: Solve for x
    x = 856,274.14/816.46
  6. Step 6: Final answer
    x = 1,048.76

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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.