Home / 679.03-1,018.13-268.29

Finding the Fourth Proportional to 679.03, 1,018.13 and 268.29

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Solution

The fourth proportional to 679.03, 1,018.13 and 268.29 is: 402.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.03 : 1,018.13 = 268.29 : x
  2. Step 2: Convert to fraction form
    679.03/1,018.13 = 268.29/x
  3. Step 3: Cross multiply
    679.03x = 1,018.13 × 268.29
  4. Step 4: Simplify right side
    679.03x = 273,152.76
  5. Step 5: Solve for x
    x = 273,152.76/679.03
  6. Step 6: Final answer
    x = 402.27

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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.