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Finding the Fourth Proportional to 467.52, 645.30 and 320.10

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Solution

The fourth proportional to 467.52, 645.30 and 320.10 is: 441.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.52 : 645.30 = 320.10 : x
  2. Step 2: Convert to fraction form
    467.52/645.30 = 320.10/x
  3. Step 3: Cross multiply
    467.52x = 645.30 × 320.10
  4. Step 4: Simplify right side
    467.52x = 206,560.53
  5. Step 5: Solve for x
    x = 206,560.53/467.52
  6. Step 6: Final answer
    x = 441.82

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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.