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Finding the Fourth Proportional to 889.03, 1,226.87 and 539.71

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Solution

The fourth proportional to 889.03, 1,226.87 and 539.71 is: 744.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.03 : 1,226.87 = 539.71 : x
  2. Step 2: Convert to fraction form
    889.03/1,226.87 = 539.71/x
  3. Step 3: Cross multiply
    889.03x = 1,226.87 × 539.71
  4. Step 4: Simplify right side
    889.03x = 662,154.01
  5. Step 5: Solve for x
    x = 662,154.01/889.03
  6. Step 6: Final answer
    x = 744.81

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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.