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Finding the Fourth Proportional to 483.75, 668.12 and 328.23

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Solution

The fourth proportional to 483.75, 668.12 and 328.23 is: 453.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.75 : 668.12 = 328.23 : x
  2. Step 2: Convert to fraction form
    483.75/668.12 = 328.23/x
  3. Step 3: Cross multiply
    483.75x = 668.12 × 328.23
  4. Step 4: Simplify right side
    483.75x = 219,295.39
  5. Step 5: Solve for x
    x = 219,295.39/483.75
  6. Step 6: Final answer
    x = 453.32

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1.5x scale

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.