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Finding the Fourth Proportional to 795.30, 1,191.06 and 520.71

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Solution

The fourth proportional to 795.30, 1,191.06 and 520.71 is: 779.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    795.30 : 1,191.06 = 520.71 : x
  2. Step 2: Convert to fraction form
    795.30/1,191.06 = 520.71/x
  3. Step 3: Cross multiply
    795.30x = 1,191.06 × 520.71
  4. Step 4: Simplify right side
    795.30x = 620,196.85
  5. Step 5: Solve for x
    x = 620,196.85/795.30
  6. Step 6: Final answer
    x = 779.83

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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.