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Finding the Fourth Proportional to 1,296.96, 1,945.70 and 372.53

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Solution

The fourth proportional to 1,296.96, 1,945.70 and 372.53 is: 558.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296.96 : 1,945.70 = 372.53 : x
  2. Step 2: Convert to fraction form
    1,296.96/1,945.70 = 372.53/x
  3. Step 3: Cross multiply
    1,296.96x = 1,945.70 × 372.53
  4. Step 4: Simplify right side
    1,296.96x = 724,831.62
  5. Step 5: Solve for x
    x = 724,831.62/1,296.96
  6. Step 6: Final answer
    x = 558.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.