Home / 1,117.11-1,676.44-459.03

Finding the Fourth Proportional to 1,117.11, 1,676.44 and 459.03

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Solution

The fourth proportional to 1,117.11, 1,676.44 and 459.03 is: 688.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.11 : 1,676.44 = 459.03 : x
  2. Step 2: Convert to fraction form
    1,117.11/1,676.44 = 459.03/x
  3. Step 3: Cross multiply
    1,117.11x = 1,676.44 × 459.03
  4. Step 4: Simplify right side
    1,117.11x = 769,543.11
  5. Step 5: Solve for x
    x = 769,543.11/1,117.11
  6. Step 6: Final answer
    x = 688.87

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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.