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Finding the Fourth Proportional to 883.78, 1,322.90 and 608.26

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Solution

The fourth proportional to 883.78, 1,322.90 and 608.26 is: 910.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.78 : 1,322.90 = 608.26 : x
  2. Step 2: Convert to fraction form
    883.78/1,322.90 = 608.26/x
  3. Step 3: Cross multiply
    883.78x = 1,322.90 × 608.26
  4. Step 4: Simplify right side
    883.78x = 804,667.15
  5. Step 5: Solve for x
    x = 804,667.15/883.78
  6. Step 6: Final answer
    x = 910.48

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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.