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Finding the Fourth Proportional to 899.64, 1,238.28 and 750.60

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Solution

The fourth proportional to 899.64, 1,238.28 and 750.60 is: 1,033.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    899.64 : 1,238.28 = 750.60 : x
  2. Step 2: Convert to fraction form
    899.64/1,238.28 = 750.60/x
  3. Step 3: Cross multiply
    899.64x = 1,238.28 × 750.60
  4. Step 4: Simplify right side
    899.64x = 929,452.97
  5. Step 5: Solve for x
    x = 929,452.97/899.64
  6. Step 6: Final answer
    x = 1,033.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.