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Finding the Fourth Proportional to 900.39, 1,350.25 and 352.45

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Solution

The fourth proportional to 900.39, 1,350.25 and 352.45 is: 528.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.39 : 1,350.25 = 352.45 : x
  2. Step 2: Convert to fraction form
    900.39/1,350.25 = 352.45/x
  3. Step 3: Cross multiply
    900.39x = 1,350.25 × 352.45
  4. Step 4: Simplify right side
    900.39x = 475,896.42
  5. Step 5: Solve for x
    x = 475,896.42/900.39
  6. Step 6: Final answer
    x = 528.54

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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.