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Finding the Fourth Proportional to 412.02, 568.55 and 243.95

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Solution

The fourth proportional to 412.02, 568.55 and 243.95 is: 336.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.02 : 568.55 = 243.95 : x
  2. Step 2: Convert to fraction form
    412.02/568.55 = 243.95/x
  3. Step 3: Cross multiply
    412.02x = 568.55 × 243.95
  4. Step 4: Simplify right side
    412.02x = 138,695.54
  5. Step 5: Solve for x
    x = 138,695.54/412.02
  6. Step 6: Final answer
    x = 336.62

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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.