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Finding the Fourth Proportional to 889.01, 1,226.81 and 516.02

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Solution

The fourth proportional to 889.01, 1,226.81 and 516.02 is: 712.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.01 : 1,226.81 = 516.02 : x
  2. Step 2: Convert to fraction form
    889.01/1,226.81 = 516.02/x
  3. Step 3: Cross multiply
    889.01x = 1,226.81 × 516.02
  4. Step 4: Simplify right side
    889.01x = 633,058.50
  5. Step 5: Solve for x
    x = 633,058.50/889.01
  6. Step 6: Final answer
    x = 712.10

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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.