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Finding the Fourth Proportional to 782.04, 1,172.82 and 370.95

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Solution

The fourth proportional to 782.04, 1,172.82 and 370.95 is: 556.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    782.04 : 1,172.82 = 370.95 : x
  2. Step 2: Convert to fraction form
    782.04/1,172.82 = 370.95/x
  3. Step 3: Cross multiply
    782.04x = 1,172.82 × 370.95
  4. Step 4: Simplify right side
    782.04x = 435,057.58
  5. Step 5: Solve for x
    x = 435,057.58/782.04
  6. Step 6: Final answer
    x = 556.31

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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.