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Finding the Fourth Proportional to 944.11, 1,302.90 and 571.16

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Solution

The fourth proportional to 944.11, 1,302.90 and 571.16 is: 788.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.11 : 1,302.90 = 571.16 : x
  2. Step 2: Convert to fraction form
    944.11/1,302.90 = 571.16/x
  3. Step 3: Cross multiply
    944.11x = 1,302.90 × 571.16
  4. Step 4: Simplify right side
    944.11x = 744,164.36
  5. Step 5: Solve for x
    x = 744,164.36/944.11
  6. Step 6: Final answer
    x = 788.22

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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.