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Finding the Fourth Proportional to 464.45, 695.86 and 281.99

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Solution

The fourth proportional to 464.45, 695.86 and 281.99 is: 422.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.45 : 695.86 = 281.99 : x
  2. Step 2: Convert to fraction form
    464.45/695.86 = 281.99/x
  3. Step 3: Cross multiply
    464.45x = 695.86 × 281.99
  4. Step 4: Simplify right side
    464.45x = 196,226.60
  5. Step 5: Solve for x
    x = 196,226.60/464.45
  6. Step 6: Final answer
    x = 422.50

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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.