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Finding the Fourth Proportional to 944.61, 1,303.22 and 571.32

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Solution

The fourth proportional to 944.61, 1,303.22 and 571.32 is: 788.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.61 : 1,303.22 = 571.32 : x
  2. Step 2: Convert to fraction form
    944.61/1,303.22 = 571.32/x
  3. Step 3: Cross multiply
    944.61x = 1,303.22 × 571.32
  4. Step 4: Simplify right side
    944.61x = 744,552.79
  5. Step 5: Solve for x
    x = 744,552.79/944.61
  6. Step 6: Final answer
    x = 788.21

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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.