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Finding the Fourth Proportional to 826.06, 1,237.72 and 581.39

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Solution

The fourth proportional to 826.06, 1,237.72 and 581.39 is: 871.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    826.06 : 1,237.72 = 581.39 : x
  2. Step 2: Convert to fraction form
    826.06/1,237.72 = 581.39/x
  3. Step 3: Cross multiply
    826.06x = 1,237.72 × 581.39
  4. Step 4: Simplify right side
    826.06x = 719,598.03
  5. Step 5: Solve for x
    x = 719,598.03/826.06
  6. Step 6: Final answer
    x = 871.12

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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.