Home / 1,225.13-1,837.30-403.21

Finding the Fourth Proportional to 1,225.13, 1,837.30 and 403.21

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Solution

The fourth proportional to 1,225.13, 1,837.30 and 403.21 is: 604.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225.13 : 1,837.30 = 403.21 : x
  2. Step 2: Convert to fraction form
    1,225.13/1,837.30 = 403.21/x
  3. Step 3: Cross multiply
    1,225.13x = 1,837.30 × 403.21
  4. Step 4: Simplify right side
    1,225.13x = 740,822.33
  5. Step 5: Solve for x
    x = 740,822.33/1,225.13
  6. Step 6: Final answer
    x = 604.69

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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.