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Finding the Fourth Proportional to 679.75, 1,014.22 and 632.63

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Solution

The fourth proportional to 679.75, 1,014.22 and 632.63 is: 943.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.75 : 1,014.22 = 632.63 : x
  2. Step 2: Convert to fraction form
    679.75/1,014.22 = 632.63/x
  3. Step 3: Cross multiply
    679.75x = 1,014.22 × 632.63
  4. Step 4: Simplify right side
    679.75x = 641,626.00
  5. Step 5: Solve for x
    x = 641,626.00/679.75
  6. Step 6: Final answer
    x = 943.91

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.