Home / 900.20-1,350.09-352.13

Finding the Fourth Proportional to 900.20, 1,350.09 and 352.13

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Solution

The fourth proportional to 900.20, 1,350.09 and 352.13 is: 528.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.20 : 1,350.09 = 352.13 : x
  2. Step 2: Convert to fraction form
    900.20/1,350.09 = 352.13/x
  3. Step 3: Cross multiply
    900.20x = 1,350.09 × 352.13
  4. Step 4: Simplify right side
    900.20x = 475,400.44
  5. Step 5: Solve for x
    x = 475,400.44/900.20
  6. Step 6: Final answer
    x = 528.11

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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.