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Finding the Fourth Proportional to 714.14, 985.66 and 481.13

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Solution

The fourth proportional to 714.14, 985.66 and 481.13 is: 664.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.14 : 985.66 = 481.13 : x
  2. Step 2: Convert to fraction form
    714.14/985.66 = 481.13/x
  3. Step 3: Cross multiply
    714.14x = 985.66 × 481.13
  4. Step 4: Simplify right side
    714.14x = 474,230.60
  5. Step 5: Solve for x
    x = 474,230.60/714.14
  6. Step 6: Final answer
    x = 664.06

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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.