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Finding the Fourth Proportional to 881.60, 1,321.58 and 304.08

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Solution

The fourth proportional to 881.60, 1,321.58 and 304.08 is: 455.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.60 : 1,321.58 = 304.08 : x
  2. Step 2: Convert to fraction form
    881.60/1,321.58 = 304.08/x
  3. Step 3: Cross multiply
    881.60x = 1,321.58 × 304.08
  4. Step 4: Simplify right side
    881.60x = 401,866.05
  5. Step 5: Solve for x
    x = 401,866.05/881.60
  6. Step 6: Final answer
    x = 455.84

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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.