Home / 1,100.36-1,650.29-320.18

Finding the Fourth Proportional to 1,100.36, 1,650.29 and 320.18

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Solution

The fourth proportional to 1,100.36, 1,650.29 and 320.18 is: 480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100.36 : 1,650.29 = 320.18 : x
  2. Step 2: Convert to fraction form
    1,100.36/1,650.29 = 320.18/x
  3. Step 3: Cross multiply
    1,100.36x = 1,650.29 × 320.18
  4. Step 4: Simplify right side
    1,100.36x = 528,392.38
  5. Step 5: Solve for x
    x = 528,392.38/1,100.36
  6. Step 6: Final answer
    x = 480.20

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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.