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Finding the Fourth Proportional to 322.80, 483.48 and 214.32

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Solution

The fourth proportional to 322.80, 483.48 and 214.32 is: 321.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.80 : 483.48 = 214.32 : x
  2. Step 2: Convert to fraction form
    322.80/483.48 = 214.32/x
  3. Step 3: Cross multiply
    322.80x = 483.48 × 214.32
  4. Step 4: Simplify right side
    322.80x = 103,619.43
  5. Step 5: Solve for x
    x = 103,619.43/322.80
  6. Step 6: Final answer
    x = 321.00

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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.