Home / 1,225.15-1,837.94-403.20

Finding the Fourth Proportional to 1,225.15, 1,837.94 and 403.20

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Solution

The fourth proportional to 1,225.15, 1,837.94 and 403.20 is: 604.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225.15 : 1,837.94 = 403.20 : x
  2. Step 2: Convert to fraction form
    1,225.15/1,837.94 = 403.20/x
  3. Step 3: Cross multiply
    1,225.15x = 1,837.94 × 403.20
  4. Step 4: Simplify right side
    1,225.15x = 741,055.39
  5. Step 5: Solve for x
    x = 741,055.39/1,225.15
  6. Step 6: Final answer
    x = 604.87

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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.