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Finding the Fourth Proportional to 1,372.88, 1,896.19 and 930.01

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Solution

The fourth proportional to 1,372.88, 1,896.19 and 930.01 is: 1,284.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.88 : 1,896.19 = 930.01 : x
  2. Step 2: Convert to fraction form
    1,372.88/1,896.19 = 930.01/x
  3. Step 3: Cross multiply
    1,372.88x = 1,896.19 × 930.01
  4. Step 4: Simplify right side
    1,372.88x = 1,763,475.66
  5. Step 5: Solve for x
    x = 1,763,475.66/1,372.88
  6. Step 6: Final answer
    x = 1,284.51

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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.