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Finding the Fourth Proportional to 1,454.70, 2,181.23 and 993.04

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Solution

The fourth proportional to 1,454.70, 2,181.23 and 993.04 is: 1,489.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,454.70 : 2,181.23 = 993.04 : x
  2. Step 2: Convert to fraction form
    1,454.70/2,181.23 = 993.04/x
  3. Step 3: Cross multiply
    1,454.70x = 2,181.23 × 993.04
  4. Step 4: Simplify right side
    1,454.70x = 2,166,057.01
  5. Step 5: Solve for x
    x = 2,166,057.01/1,454.70
  6. Step 6: Final answer
    x = 1,489.00

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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.