Home / 1,109.13-1,663.89-416.27

Finding the Fourth Proportional to 1,109.13, 1,663.89 and 416.27

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Solution

The fourth proportional to 1,109.13, 1,663.89 and 416.27 is: 624.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109.13 : 1,663.89 = 416.27 : x
  2. Step 2: Convert to fraction form
    1,109.13/1,663.89 = 416.27/x
  3. Step 3: Cross multiply
    1,109.13x = 1,663.89 × 416.27
  4. Step 4: Simplify right side
    1,109.13x = 692,619.17
  5. Step 5: Solve for x
    x = 692,619.17/1,109.13
  6. Step 6: Final answer
    x = 624.47

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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.