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Finding the Fourth Proportional to 463.30, 695.28 and 219.88

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Solution

The fourth proportional to 463.30, 695.28 and 219.88 is: 329.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.30 : 695.28 = 219.88 : x
  2. Step 2: Convert to fraction form
    463.30/695.28 = 219.88/x
  3. Step 3: Cross multiply
    463.30x = 695.28 × 219.88
  4. Step 4: Simplify right side
    463.30x = 152,878.17
  5. Step 5: Solve for x
    x = 152,878.17/463.30
  6. Step 6: Final answer
    x = 329.98

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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.