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Finding the Fourth Proportional to 483.15, 667.04 and 317.66

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Solution

The fourth proportional to 483.15, 667.04 and 317.66 is: 438.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.15 : 667.04 = 317.66 : x
  2. Step 2: Convert to fraction form
    483.15/667.04 = 317.66/x
  3. Step 3: Cross multiply
    483.15x = 667.04 × 317.66
  4. Step 4: Simplify right side
    483.15x = 211,887.00
  5. Step 5: Solve for x
    x = 211,887.00/483.15
  6. Step 6: Final answer
    x = 438.55

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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.