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Finding the Fourth Proportional to 965.35, 1,447.50 and 618.47

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Solution

The fourth proportional to 965.35, 1,447.50 and 618.47 is: 927.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    965.35 : 1,447.50 = 618.47 : x
  2. Step 2: Convert to fraction form
    965.35/1,447.50 = 618.47/x
  3. Step 3: Cross multiply
    965.35x = 1,447.50 × 618.47
  4. Step 4: Simplify right side
    965.35x = 895,235.83
  5. Step 5: Solve for x
    x = 895,235.83/965.35
  6. Step 6: Final answer
    x = 927.37

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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.