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Finding the Fourth Proportional to 1,228.62, 1,840.59 and 982.32

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Solution

The fourth proportional to 1,228.62, 1,840.59 and 982.32 is: 1,471.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.62 : 1,840.59 = 982.32 : x
  2. Step 2: Convert to fraction form
    1,228.62/1,840.59 = 982.32/x
  3. Step 3: Cross multiply
    1,228.62x = 1,840.59 × 982.32
  4. Step 4: Simplify right side
    1,228.62x = 1,808,048.37
  5. Step 5: Solve for x
    x = 1,808,048.37/1,228.62
  6. Step 6: Final answer
    x = 1,471.61

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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.