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Finding the Fourth Proportional to 463.53, 694.84 and 258.20

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Solution

The fourth proportional to 463.53, 694.84 and 258.20 is: 387.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.53 : 694.84 = 258.20 : x
  2. Step 2: Convert to fraction form
    463.53/694.84 = 258.20/x
  3. Step 3: Cross multiply
    463.53x = 694.84 × 258.20
  4. Step 4: Simplify right side
    463.53x = 179,407.69
  5. Step 5: Solve for x
    x = 179,407.69/463.53
  6. Step 6: Final answer
    x = 387.05

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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.