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Finding the Fourth Proportional to 941.28, 1,412.36 and 454.48

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Solution

The fourth proportional to 941.28, 1,412.36 and 454.48 is: 681.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.28 : 1,412.36 = 454.48 : x
  2. Step 2: Convert to fraction form
    941.28/1,412.36 = 454.48/x
  3. Step 3: Cross multiply
    941.28x = 1,412.36 × 454.48
  4. Step 4: Simplify right side
    941.28x = 641,889.37
  5. Step 5: Solve for x
    x = 641,889.37/941.28
  6. Step 6: Final answer
    x = 681.93

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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.