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Finding the Fourth Proportional to 1,930.88, 2,896.31 and 470.02

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Solution

The fourth proportional to 1,930.88, 2,896.31 and 470.02 is: 705.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,930.88 : 2,896.31 = 470.02 : x
  2. Step 2: Convert to fraction form
    1,930.88/2,896.31 = 470.02/x
  3. Step 3: Cross multiply
    1,930.88x = 2,896.31 × 470.02
  4. Step 4: Simplify right side
    1,930.88x = 1,361,311.10
  5. Step 5: Solve for x
    x = 1,361,311.10/1,930.88
  6. Step 6: Final answer
    x = 705.02

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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.