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Finding the Fourth Proportional to 1,190.73, 1,641.11 and 1,004.70

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Solution

The fourth proportional to 1,190.73, 1,641.11 and 1,004.70 is: 1,384.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190.73 : 1,641.11 = 1,004.70 : x
  2. Step 2: Convert to fraction form
    1,190.73/1,641.11 = 1,004.70/x
  3. Step 3: Cross multiply
    1,190.73x = 1,641.11 × 1,004.70
  4. Step 4: Simplify right side
    1,190.73x = 1,648,823.22
  5. Step 5: Solve for x
    x = 1,648,823.22/1,190.73
  6. Step 6: Final answer
    x = 1,384.72

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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.