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Finding the Fourth Proportional to 959.74, 1,325.73 and 847.88

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Solution

The fourth proportional to 959.74, 1,325.73 and 847.88 is: 1,171.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    959.74 : 1,325.73 = 847.88 : x
  2. Step 2: Convert to fraction form
    959.74/1,325.73 = 847.88/x
  3. Step 3: Cross multiply
    959.74x = 1,325.73 × 847.88
  4. Step 4: Simplify right side
    959.74x = 1,124,059.95
  5. Step 5: Solve for x
    x = 1,124,059.95/959.74
  6. Step 6: Final answer
    x = 1,171.21

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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.