Home / 1,109.23-1,664.48-492.89

Finding the Fourth Proportional to 1,109.23, 1,664.48 and 492.89

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Solution

The fourth proportional to 1,109.23, 1,664.48 and 492.89 is: 739.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109.23 : 1,664.48 = 492.89 : x
  2. Step 2: Convert to fraction form
    1,109.23/1,664.48 = 492.89/x
  3. Step 3: Cross multiply
    1,109.23x = 1,664.48 × 492.89
  4. Step 4: Simplify right side
    1,109.23x = 820,398.46
  5. Step 5: Solve for x
    x = 820,398.46/1,109.23
  6. Step 6: Final answer
    x = 739.61

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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.