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Finding the Fourth Proportional to 464.25, 696.69 and 207.75

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Solution

The fourth proportional to 464.25, 696.69 and 207.75 is: 311.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.25 : 696.69 = 207.75 : x
  2. Step 2: Convert to fraction form
    464.25/696.69 = 207.75/x
  3. Step 3: Cross multiply
    464.25x = 696.69 × 207.75
  4. Step 4: Simplify right side
    464.25x = 144,737.35
  5. Step 5: Solve for x
    x = 144,737.35/464.25
  6. Step 6: Final answer
    x = 311.77

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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.