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Finding the Fourth Proportional to 884.81, 1,318.32 and 835.13

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Solution

The fourth proportional to 884.81, 1,318.32 and 835.13 is: 1,244.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.81 : 1,318.32 = 835.13 : x
  2. Step 2: Convert to fraction form
    884.81/1,318.32 = 835.13/x
  3. Step 3: Cross multiply
    884.81x = 1,318.32 × 835.13
  4. Step 4: Simplify right side
    884.81x = 1,100,968.58
  5. Step 5: Solve for x
    x = 1,100,968.58/884.81
  6. Step 6: Final answer
    x = 1,244.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.