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Finding the Fourth Proportional to 612.81, 846.99 and 481.59

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Solution

The fourth proportional to 612.81, 846.99 and 481.59 is: 665.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.81 : 846.99 = 481.59 : x
  2. Step 2: Convert to fraction form
    612.81/846.99 = 481.59/x
  3. Step 3: Cross multiply
    612.81x = 846.99 × 481.59
  4. Step 4: Simplify right side
    612.81x = 407,901.91
  5. Step 5: Solve for x
    x = 407,901.91/612.81
  6. Step 6: Final answer
    x = 665.63

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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.