Home / 1,225.09-1,837.20-403.18

Finding the Fourth Proportional to 1,225.09, 1,837.20 and 403.18

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Solution

The fourth proportional to 1,225.09, 1,837.20 and 403.18 is: 604.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225.09 : 1,837.20 = 403.18 : x
  2. Step 2: Convert to fraction form
    1,225.09/1,837.20 = 403.18/x
  3. Step 3: Cross multiply
    1,225.09x = 1,837.20 × 403.18
  4. Step 4: Simplify right side
    1,225.09x = 740,722.30
  5. Step 5: Solve for x
    x = 740,722.30/1,225.09
  6. Step 6: Final answer
    x = 604.63

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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.