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Finding the Fourth Proportional to 1,174.66, 1,761.48 and 626.72

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Solution

The fourth proportional to 1,174.66, 1,761.48 and 626.72 is: 939.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174.66 : 1,761.48 = 626.72 : x
  2. Step 2: Convert to fraction form
    1,174.66/1,761.48 = 626.72/x
  3. Step 3: Cross multiply
    1,174.66x = 1,761.48 × 626.72
  4. Step 4: Simplify right side
    1,174.66x = 1,103,954.75
  5. Step 5: Solve for x
    x = 1,103,954.75/1,174.66
  6. Step 6: Final answer
    x = 939.81

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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.