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Finding the Fourth Proportional to 1,663.13, 2,295.23 and 999.99

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Solution

The fourth proportional to 1,663.13, 2,295.23 and 999.99 is: 1,380.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,663.13 : 2,295.23 = 999.99 : x
  2. Step 2: Convert to fraction form
    1,663.13/2,295.23 = 999.99/x
  3. Step 3: Cross multiply
    1,663.13x = 2,295.23 × 999.99
  4. Step 4: Simplify right side
    1,663.13x = 2,295,202.05
  5. Step 5: Solve for x
    x = 2,295,202.05/1,663.13
  6. Step 6: Final answer
    x = 1,380.05

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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.