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Finding the Fourth Proportional to 900.14, 1,351.01 and 668.48

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Solution

The fourth proportional to 900.14, 1,351.01 and 668.48 is: 1,003.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.14 : 1,351.01 = 668.48 : x
  2. Step 2: Convert to fraction form
    900.14/1,351.01 = 668.48/x
  3. Step 3: Cross multiply
    900.14x = 1,351.01 × 668.48
  4. Step 4: Simplify right side
    900.14x = 903,118.08
  5. Step 5: Solve for x
    x = 903,118.08/900.14
  6. Step 6: Final answer
    x = 1,003.31

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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.