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Finding the Fourth Proportional to 830.94, 1,245.95 and 733.67

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Solution

The fourth proportional to 830.94, 1,245.95 and 733.67 is: 1,100.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    830.94 : 1,245.95 = 733.67 : x
  2. Step 2: Convert to fraction form
    830.94/1,245.95 = 733.67/x
  3. Step 3: Cross multiply
    830.94x = 1,245.95 × 733.67
  4. Step 4: Simplify right side
    830.94x = 914,116.14
  5. Step 5: Solve for x
    x = 914,116.14/830.94
  6. Step 6: Final answer
    x = 1,100.10

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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.