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Finding the Fourth Proportional to 468.14, 645.64 and 351.50

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Solution

The fourth proportional to 468.14, 645.64 and 351.50 is: 484.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.14 : 645.64 = 351.50 : x
  2. Step 2: Convert to fraction form
    468.14/645.64 = 351.50/x
  3. Step 3: Cross multiply
    468.14x = 645.64 × 351.50
  4. Step 4: Simplify right side
    468.14x = 226,938.35
  5. Step 5: Solve for x
    x = 226,938.35/468.14
  6. Step 6: Final answer
    x = 484.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.