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Finding the Fourth Proportional to 900.38, 1,350.56 and 216.38

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Solution

The fourth proportional to 900.38, 1,350.56 and 216.38 is: 324.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.38 : 1,350.56 = 216.38 : x
  2. Step 2: Convert to fraction form
    900.38/1,350.56 = 216.38/x
  3. Step 3: Cross multiply
    900.38x = 1,350.56 × 216.38
  4. Step 4: Simplify right side
    900.38x = 292,227.96
  5. Step 5: Solve for x
    x = 292,227.96/900.38
  6. Step 6: Final answer
    x = 324.56

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1.5x scale

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.