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Finding the Fourth Proportional to 645.58, 969.22 and 337.66

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Solution

The fourth proportional to 645.58, 969.22 and 337.66 is: 506.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.58 : 969.22 = 337.66 : x
  2. Step 2: Convert to fraction form
    645.58/969.22 = 337.66/x
  3. Step 3: Cross multiply
    645.58x = 969.22 × 337.66
  4. Step 4: Simplify right side
    645.58x = 327,266.83
  5. Step 5: Solve for x
    x = 327,266.83/645.58
  6. Step 6: Final answer
    x = 506.93

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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.