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Finding the Fourth Proportional to 1,162.81, 1,604.19 and 697.06

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Solution

The fourth proportional to 1,162.81, 1,604.19 and 697.06 is: 961.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,162.81 : 1,604.19 = 697.06 : x
  2. Step 2: Convert to fraction form
    1,162.81/1,604.19 = 697.06/x
  3. Step 3: Cross multiply
    1,162.81x = 1,604.19 × 697.06
  4. Step 4: Simplify right side
    1,162.81x = 1,118,216.68
  5. Step 5: Solve for x
    x = 1,118,216.68/1,162.81
  6. Step 6: Final answer
    x = 961.65

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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.