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Finding the Fourth Proportional to 944.59, 1,303.08 and 613.12

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Solution

The fourth proportional to 944.59, 1,303.08 and 613.12 is: 845.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.59 : 1,303.08 = 613.12 : x
  2. Step 2: Convert to fraction form
    944.59/1,303.08 = 613.12/x
  3. Step 3: Cross multiply
    944.59x = 1,303.08 × 613.12
  4. Step 4: Simplify right side
    944.59x = 798,944.41
  5. Step 5: Solve for x
    x = 798,944.41/944.59
  6. Step 6: Final answer
    x = 845.81

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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.