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Finding the Fourth Proportional to 883.56, 1,323.39 and 553.42

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Solution

The fourth proportional to 883.56, 1,323.39 and 553.42 is: 828.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.56 : 1,323.39 = 553.42 : x
  2. Step 2: Convert to fraction form
    883.56/1,323.39 = 553.42/x
  3. Step 3: Cross multiply
    883.56x = 1,323.39 × 553.42
  4. Step 4: Simplify right side
    883.56x = 732,391.11
  5. Step 5: Solve for x
    x = 732,391.11/883.56
  6. Step 6: Final answer
    x = 828.91

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1.5x scale

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.