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Finding the Fourth Proportional to 713.37, 1,069.11 and 403.95

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Solution

The fourth proportional to 713.37, 1,069.11 and 403.95 is: 605.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.37 : 1,069.11 = 403.95 : x
  2. Step 2: Convert to fraction form
    713.37/1,069.11 = 403.95/x
  3. Step 3: Cross multiply
    713.37x = 1,069.11 × 403.95
  4. Step 4: Simplify right side
    713.37x = 431,866.98
  5. Step 5: Solve for x
    x = 431,866.98/713.37
  6. Step 6: Final answer
    x = 605.39

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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.