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Finding the Fourth Proportional to 633.22, 948.36 and 611.32

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Solution

The fourth proportional to 633.22, 948.36 and 611.32 is: 915.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.22 : 948.36 = 611.32 : x
  2. Step 2: Convert to fraction form
    633.22/948.36 = 611.32/x
  3. Step 3: Cross multiply
    633.22x = 948.36 × 611.32
  4. Step 4: Simplify right side
    633.22x = 579,751.44
  5. Step 5: Solve for x
    x = 579,751.44/633.22
  6. Step 6: Final answer
    x = 915.56

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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.