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Finding the Fourth Proportional to 881.79, 1,322.74 and 265.49

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Solution

The fourth proportional to 881.79, 1,322.74 and 265.49 is: 398.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.79 : 1,322.74 = 265.49 : x
  2. Step 2: Convert to fraction form
    881.79/1,322.74 = 265.49/x
  3. Step 3: Cross multiply
    881.79x = 1,322.74 × 265.49
  4. Step 4: Simplify right side
    881.79x = 351,172.92
  5. Step 5: Solve for x
    x = 351,172.92/881.79
  6. Step 6: Final answer
    x = 398.25

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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.