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Finding the Fourth Proportional to 888.81, 1,327.32 and 879.16

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Solution

The fourth proportional to 888.81, 1,327.32 and 879.16 is: 1,312.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.81 : 1,327.32 = 879.16 : x
  2. Step 2: Convert to fraction form
    888.81/1,327.32 = 879.16/x
  3. Step 3: Cross multiply
    888.81x = 1,327.32 × 879.16
  4. Step 4: Simplify right side
    888.81x = 1,166,923.48
  5. Step 5: Solve for x
    x = 1,166,923.48/888.81
  6. Step 6: Final answer
    x = 1,312.90

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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.