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Finding the Fourth Proportional to 465.28, 697.97 and 157.05

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Solution

The fourth proportional to 465.28, 697.97 and 157.05 is: 235.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.28 : 697.97 = 157.05 : x
  2. Step 2: Convert to fraction form
    465.28/697.97 = 157.05/x
  3. Step 3: Cross multiply
    465.28x = 697.97 × 157.05
  4. Step 4: Simplify right side
    465.28x = 109,616.58
  5. Step 5: Solve for x
    x = 109,616.58/465.28
  6. Step 6: Final answer
    x = 235.59

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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.