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Finding the Fourth Proportional to 1,143.22, 1,576.86 and 701.34

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Solution

The fourth proportional to 1,143.22, 1,576.86 and 701.34 is: 967.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143.22 : 1,576.86 = 701.34 : x
  2. Step 2: Convert to fraction form
    1,143.22/1,576.86 = 701.34/x
  3. Step 3: Cross multiply
    1,143.22x = 1,576.86 × 701.34
  4. Step 4: Simplify right side
    1,143.22x = 1,105,914.99
  5. Step 5: Solve for x
    x = 1,105,914.99/1,143.22
  6. Step 6: Final answer
    x = 967.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.