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Finding the Fourth Proportional to 645.51, 968.31 and 234.66

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Solution

The fourth proportional to 645.51, 968.31 and 234.66 is: 352.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.51 : 968.31 = 234.66 : x
  2. Step 2: Convert to fraction form
    645.51/968.31 = 234.66/x
  3. Step 3: Cross multiply
    645.51x = 968.31 × 234.66
  4. Step 4: Simplify right side
    645.51x = 227,223.62
  5. Step 5: Solve for x
    x = 227,223.62/645.51
  6. Step 6: Final answer
    x = 352.01

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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.