Home / 1,110.24-1,664.36-379.65

Finding the Fourth Proportional to 1,110.24, 1,664.36 and 379.65

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Solution

The fourth proportional to 1,110.24, 1,664.36 and 379.65 is: 569.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.24 : 1,664.36 = 379.65 : x
  2. Step 2: Convert to fraction form
    1,110.24/1,664.36 = 379.65/x
  3. Step 3: Cross multiply
    1,110.24x = 1,664.36 × 379.65
  4. Step 4: Simplify right side
    1,110.24x = 631,872.38
  5. Step 5: Solve for x
    x = 631,872.38/1,110.24
  6. Step 6: Final answer
    x = 569.13

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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.