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Finding the Fourth Proportional to 1,083.18, 1,494.78 and 585.81

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Solution

The fourth proportional to 1,083.18, 1,494.78 and 585.81 is: 808.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,083.18 : 1,494.78 = 585.81 : x
  2. Step 2: Convert to fraction form
    1,083.18/1,494.78 = 585.81/x
  3. Step 3: Cross multiply
    1,083.18x = 1,494.78 × 585.81
  4. Step 4: Simplify right side
    1,083.18x = 875,660.81
  5. Step 5: Solve for x
    x = 875,660.81/1,083.18
  6. Step 6: Final answer
    x = 808.42

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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.