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Finding the Fourth Proportional to 944.47, 1,303.43 and 571.42

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Solution

The fourth proportional to 944.47, 1,303.43 and 571.42 is: 788.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.47 : 1,303.43 = 571.42 : x
  2. Step 2: Convert to fraction form
    944.47/1,303.43 = 571.42/x
  3. Step 3: Cross multiply
    944.47x = 1,303.43 × 571.42
  4. Step 4: Simplify right side
    944.47x = 744,805.97
  5. Step 5: Solve for x
    x = 744,805.97/944.47
  6. Step 6: Final answer
    x = 788.60

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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.