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Finding the Fourth Proportional to 944.04, 1,308.90 and 913.66

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Solution

The fourth proportional to 944.04, 1,308.90 and 913.66 is: 1,266.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.04 : 1,308.90 = 913.66 : x
  2. Step 2: Convert to fraction form
    944.04/1,308.90 = 913.66/x
  3. Step 3: Cross multiply
    944.04x = 1,308.90 × 913.66
  4. Step 4: Simplify right side
    944.04x = 1,195,889.57
  5. Step 5: Solve for x
    x = 1,195,889.57/944.04
  6. Step 6: Final answer
    x = 1,266.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.