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Finding the Fourth Proportional to 881.64, 1,320.98 and 573.03

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Solution

The fourth proportional to 881.64, 1,320.98 and 573.03 is: 858.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.64 : 1,320.98 = 573.03 : x
  2. Step 2: Convert to fraction form
    881.64/1,320.98 = 573.03/x
  3. Step 3: Cross multiply
    881.64x = 1,320.98 × 573.03
  4. Step 4: Simplify right side
    881.64x = 756,958.30
  5. Step 5: Solve for x
    x = 756,958.30/881.64
  6. Step 6: Final answer
    x = 858.58

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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.