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Finding the Fourth Proportional to 941.44, 1,299.84 and 631.84

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Solution

The fourth proportional to 941.44, 1,299.84 and 631.84 is: 872.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.44 : 1,299.84 = 631.84 : x
  2. Step 2: Convert to fraction form
    941.44/1,299.84 = 631.84/x
  3. Step 3: Cross multiply
    941.44x = 1,299.84 × 631.84
  4. Step 4: Simplify right side
    941.44x = 821,290.91
  5. Step 5: Solve for x
    x = 821,290.91/941.44
  6. Step 6: Final answer
    x = 872.38

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Double scale
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1.5x scale

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.