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Finding the Fourth Proportional to 464.88, 698.68 and 388.32

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Solution

The fourth proportional to 464.88, 698.68 and 388.32 is: 583.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.88 : 698.68 = 388.32 : x
  2. Step 2: Convert to fraction form
    464.88/698.68 = 388.32/x
  3. Step 3: Cross multiply
    464.88x = 698.68 × 388.32
  4. Step 4: Simplify right side
    464.88x = 271,311.42
  5. Step 5: Solve for x
    x = 271,311.42/464.88
  6. Step 6: Final answer
    x = 583.62

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.