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Finding the Fourth Proportional to 1,162.81, 1,606.82 and 847.54

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Solution

The fourth proportional to 1,162.81, 1,606.82 and 847.54 is: 1,171.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,162.81 : 1,606.82 = 847.54 : x
  2. Step 2: Convert to fraction form
    1,162.81/1,606.82 = 847.54/x
  3. Step 3: Cross multiply
    1,162.81x = 1,606.82 × 847.54
  4. Step 4: Simplify right side
    1,162.81x = 1,361,842.24
  5. Step 5: Solve for x
    x = 1,361,842.24/1,162.81
  6. Step 6: Final answer
    x = 1,171.16

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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.