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Finding the Fourth Proportional to 679.08, 1,014.36 and 581.11

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Solution

The fourth proportional to 679.08, 1,014.36 and 581.11 is: 868.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.08 : 1,014.36 = 581.11 : x
  2. Step 2: Convert to fraction form
    679.08/1,014.36 = 581.11/x
  3. Step 3: Cross multiply
    679.08x = 1,014.36 × 581.11
  4. Step 4: Simplify right side
    679.08x = 589,450.02
  5. Step 5: Solve for x
    x = 589,450.02/679.08
  6. Step 6: Final answer
    x = 868.01

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.