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Finding the Fourth Proportional to 1,377.30, 2,065.68 and 799.50

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Solution

The fourth proportional to 1,377.30, 2,065.68 and 799.50 is: 1,199.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377.30 : 2,065.68 = 799.50 : x
  2. Step 2: Convert to fraction form
    1,377.30/2,065.68 = 799.50/x
  3. Step 3: Cross multiply
    1,377.30x = 2,065.68 × 799.50
  4. Step 4: Simplify right side
    1,377.30x = 1,651,511.16
  5. Step 5: Solve for x
    x = 1,651,511.16/1,377.30
  6. Step 6: Final answer
    x = 1,199.09

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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.