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Finding the Fourth Proportional to 795.62, 1,191.58 and 611.55

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Solution

The fourth proportional to 795.62, 1,191.58 and 611.55 is: 915.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    795.62 : 1,191.58 = 611.55 : x
  2. Step 2: Convert to fraction form
    795.62/1,191.58 = 611.55/x
  3. Step 3: Cross multiply
    795.62x = 1,191.58 × 611.55
  4. Step 4: Simplify right side
    795.62x = 728,709.22
  5. Step 5: Solve for x
    x = 728,709.22/795.62
  6. Step 6: Final answer
    x = 915.90

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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.