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Finding the Fourth Proportional to 881.35, 1,216.28 and 483.05

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Solution

The fourth proportional to 881.35, 1,216.28 and 483.05 is: 666.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.35 : 1,216.28 = 483.05 : x
  2. Step 2: Convert to fraction form
    881.35/1,216.28 = 483.05/x
  3. Step 3: Cross multiply
    881.35x = 1,216.28 × 483.05
  4. Step 4: Simplify right side
    881.35x = 587,524.05
  5. Step 5: Solve for x
    x = 587,524.05/881.35
  6. Step 6: Final answer
    x = 666.62

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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.