Home / 1,225.56-1,837.68-445.26

Finding the Fourth Proportional to 1,225.56, 1,837.68 and 445.26

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Solution

The fourth proportional to 1,225.56, 1,837.68 and 445.26 is: 667.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225.56 : 1,837.68 = 445.26 : x
  2. Step 2: Convert to fraction form
    1,225.56/1,837.68 = 445.26/x
  3. Step 3: Cross multiply
    1,225.56x = 1,837.68 × 445.26
  4. Step 4: Simplify right side
    1,225.56x = 818,245.40
  5. Step 5: Solve for x
    x = 818,245.40/1,225.56
  6. Step 6: Final answer
    x = 667.65

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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.