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Finding the Fourth Proportional to 881.41, 1,322.13 and 607.43

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Solution

The fourth proportional to 881.41, 1,322.13 and 607.43 is: 911.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.41 : 1,322.13 = 607.43 : x
  2. Step 2: Convert to fraction form
    881.41/1,322.13 = 607.43/x
  3. Step 3: Cross multiply
    881.41x = 1,322.13 × 607.43
  4. Step 4: Simplify right side
    881.41x = 803,101.43
  5. Step 5: Solve for x
    x = 803,101.43/881.41
  6. Step 6: Final answer
    x = 911.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.