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Finding the Fourth Proportional to 959.63, 1,440.05 and 635.22

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Solution

The fourth proportional to 959.63, 1,440.05 and 635.22 is: 953.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    959.63 : 1,440.05 = 635.22 : x
  2. Step 2: Convert to fraction form
    959.63/1,440.05 = 635.22/x
  3. Step 3: Cross multiply
    959.63x = 1,440.05 × 635.22
  4. Step 4: Simplify right side
    959.63x = 914,745.38
  5. Step 5: Solve for x
    x = 914,745.38/959.63
  6. Step 6: Final answer
    x = 953.23

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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.