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Finding the Fourth Proportional to 1,783.32, 2,673.36 and 808.90

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Solution

The fourth proportional to 1,783.32, 2,673.36 and 808.90 is: 1,212.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,783.32 : 2,673.36 = 808.90 : x
  2. Step 2: Convert to fraction form
    1,783.32/2,673.36 = 808.90/x
  3. Step 3: Cross multiply
    1,783.32x = 2,673.36 × 808.90
  4. Step 4: Simplify right side
    1,783.32x = 2,162,480.90
  5. Step 5: Solve for x
    x = 2,162,480.90/1,783.32
  6. Step 6: Final answer
    x = 1,212.62

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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.