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Finding the Fourth Proportional to 830.66, 1,246.00 and 779.92

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Solution

The fourth proportional to 830.66, 1,246.00 and 779.92 is: 1,169.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    830.66 : 1,246.00 = 779.92 : x
  2. Step 2: Convert to fraction form
    830.66/1,246.00 = 779.92/x
  3. Step 3: Cross multiply
    830.66x = 1,246.00 × 779.92
  4. Step 4: Simplify right side
    830.66x = 971,773.79
  5. Step 5: Solve for x
    x = 971,773.79/830.66
  6. Step 6: Final answer
    x = 1,169.88

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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.