Home / 1,110.12-1,663.94-379.32

Finding the Fourth Proportional to 1,110.12, 1,663.94 and 379.32

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Solution

The fourth proportional to 1,110.12, 1,663.94 and 379.32 is: 568.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.12 : 1,663.94 = 379.32 : x
  2. Step 2: Convert to fraction form
    1,110.12/1,663.94 = 379.32/x
  3. Step 3: Cross multiply
    1,110.12x = 1,663.94 × 379.32
  4. Step 4: Simplify right side
    1,110.12x = 631,165.72
  5. Step 5: Solve for x
    x = 631,165.72/1,110.12
  6. Step 6: Final answer
    x = 568.56

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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.