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Finding the Fourth Proportional to 411.32, 568.02 and 346.34

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Solution

The fourth proportional to 411.32, 568.02 and 346.34 is: 478.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.32 : 568.02 = 346.34 : x
  2. Step 2: Convert to fraction form
    411.32/568.02 = 346.34/x
  3. Step 3: Cross multiply
    411.32x = 568.02 × 346.34
  4. Step 4: Simplify right side
    411.32x = 196,728.05
  5. Step 5: Solve for x
    x = 196,728.05/411.32
  6. Step 6: Final answer
    x = 478.28

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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.