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Finding the Fourth Proportional to 881.47, 1,216.41 and 483.13

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Solution

The fourth proportional to 881.47, 1,216.41 and 483.13 is: 666.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.47 : 1,216.41 = 483.13 : x
  2. Step 2: Convert to fraction form
    881.47/1,216.41 = 483.13/x
  3. Step 3: Cross multiply
    881.47x = 1,216.41 × 483.13
  4. Step 4: Simplify right side
    881.47x = 587,684.16
  5. Step 5: Solve for x
    x = 587,684.16/881.47
  6. Step 6: Final answer
    x = 666.71

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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.