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Finding the Fourth Proportional to 944.20, 1,285.53 and 941.28

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Solution

The fourth proportional to 944.20, 1,285.53 and 941.28 is: 1,281.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.20 : 1,285.53 = 941.28 : x
  2. Step 2: Convert to fraction form
    944.20/1,285.53 = 941.28/x
  3. Step 3: Cross multiply
    944.20x = 1,285.53 × 941.28
  4. Step 4: Simplify right side
    944.20x = 1,210,043.68
  5. Step 5: Solve for x
    x = 1,210,043.68/944.20
  6. Step 6: Final answer
    x = 1,281.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.