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Finding the Fourth Proportional to 881.44, 1,216.38 and 483.12

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Solution

The fourth proportional to 881.44, 1,216.38 and 483.12 is: 666.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.44 : 1,216.38 = 483.12 : x
  2. Step 2: Convert to fraction form
    881.44/1,216.38 = 483.12/x
  3. Step 3: Cross multiply
    881.44x = 1,216.38 × 483.12
  4. Step 4: Simplify right side
    881.44x = 587,657.51
  5. Step 5: Solve for x
    x = 587,657.51/881.44
  6. Step 6: Final answer
    x = 666.70

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Double scale
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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.