Home / 1,118.45-1,677.75-296.70

Finding the Fourth Proportional to 1,118.45, 1,677.75 and 296.70

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Solution

The fourth proportional to 1,118.45, 1,677.75 and 296.70 is: 445.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118.45 : 1,677.75 = 296.70 : x
  2. Step 2: Convert to fraction form
    1,118.45/1,677.75 = 296.70/x
  3. Step 3: Cross multiply
    1,118.45x = 1,677.75 × 296.70
  4. Step 4: Simplify right side
    1,118.45x = 497,788.43
  5. Step 5: Solve for x
    x = 497,788.43/1,118.45
  6. Step 6: Final answer
    x = 445.07

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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.