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Finding the Fourth Proportional to 322.50, 484.33 and 309.45

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Solution

The fourth proportional to 322.50, 484.33 and 309.45 is: 464.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.50 : 484.33 = 309.45 : x
  2. Step 2: Convert to fraction form
    322.50/484.33 = 309.45/x
  3. Step 3: Cross multiply
    322.50x = 484.33 × 309.45
  4. Step 4: Simplify right side
    322.50x = 149,875.92
  5. Step 5: Solve for x
    x = 149,875.92/322.50
  6. Step 6: Final answer
    x = 464.73

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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.