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Finding the Fourth Proportional to 465.05, 697.68 and 156.88

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Solution

The fourth proportional to 465.05, 697.68 and 156.88 is: 235.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.05 : 697.68 = 156.88 : x
  2. Step 2: Convert to fraction form
    465.05/697.68 = 156.88/x
  3. Step 3: Cross multiply
    465.05x = 697.68 × 156.88
  4. Step 4: Simplify right side
    465.05x = 109,452.04
  5. Step 5: Solve for x
    x = 109,452.04/465.05
  6. Step 6: Final answer
    x = 235.36

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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.