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Finding the Fourth Proportional to 463.43, 695.21 and 203.42

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Solution

The fourth proportional to 463.43, 695.21 and 203.42 is: 305.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.43 : 695.21 = 203.42 : x
  2. Step 2: Convert to fraction form
    463.43/695.21 = 203.42/x
  3. Step 3: Cross multiply
    463.43x = 695.21 × 203.42
  4. Step 4: Simplify right side
    463.43x = 141,419.62
  5. Step 5: Solve for x
    x = 141,419.62/463.43
  6. Step 6: Final answer
    x = 305.16

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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.