Home / 1,117.39-1,676.07-459.27

Finding the Fourth Proportional to 1,117.39, 1,676.07 and 459.27

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Solution

The fourth proportional to 1,117.39, 1,676.07 and 459.27 is: 688.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.39 : 1,676.07 = 459.27 : x
  2. Step 2: Convert to fraction form
    1,117.39/1,676.07 = 459.27/x
  3. Step 3: Cross multiply
    1,117.39x = 1,676.07 × 459.27
  4. Step 4: Simplify right side
    1,117.39x = 769,768.67
  5. Step 5: Solve for x
    x = 769,768.67/1,117.39
  6. Step 6: Final answer
    x = 688.90

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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.