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Finding the Fourth Proportional to 830.30, 1,244.86 and 367.82

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Solution

The fourth proportional to 830.30, 1,244.86 and 367.82 is: 551.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    830.30 : 1,244.86 = 367.82 : x
  2. Step 2: Convert to fraction form
    830.30/1,244.86 = 367.82/x
  3. Step 3: Cross multiply
    830.30x = 1,244.86 × 367.82
  4. Step 4: Simplify right side
    830.30x = 457,888.44
  5. Step 5: Solve for x
    x = 457,888.44/830.30
  6. Step 6: Final answer
    x = 551.48

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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.