Home / 1,225.46-1,837.80-403.54

Finding the Fourth Proportional to 1,225.46, 1,837.80 and 403.54

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Solution

The fourth proportional to 1,225.46, 1,837.80 and 403.54 is: 605.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225.46 : 1,837.80 = 403.54 : x
  2. Step 2: Convert to fraction form
    1,225.46/1,837.80 = 403.54/x
  3. Step 3: Cross multiply
    1,225.46x = 1,837.80 × 403.54
  4. Step 4: Simplify right side
    1,225.46x = 741,625.81
  5. Step 5: Solve for x
    x = 741,625.81/1,225.46
  6. Step 6: Final answer
    x = 605.18

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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.