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Finding the Fourth Proportional to 849.22, 1,172.34 and 534.64

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Solution

The fourth proportional to 849.22, 1,172.34 and 534.64 is: 738.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    849.22 : 1,172.34 = 534.64 : x
  2. Step 2: Convert to fraction form
    849.22/1,172.34 = 534.64/x
  3. Step 3: Cross multiply
    849.22x = 1,172.34 × 534.64
  4. Step 4: Simplify right side
    849.22x = 626,774.92
  5. Step 5: Solve for x
    x = 626,774.92/849.22
  6. Step 6: Final answer
    x = 738.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.