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Finding the Fourth Proportional to 880.64, 1,320.72 and 303.68

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Solution

The fourth proportional to 880.64, 1,320.72 and 303.68 is: 455.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.64 : 1,320.72 = 303.68 : x
  2. Step 2: Convert to fraction form
    880.64/1,320.72 = 303.68/x
  3. Step 3: Cross multiply
    880.64x = 1,320.72 × 303.68
  4. Step 4: Simplify right side
    880.64x = 401,076.25
  5. Step 5: Solve for x
    x = 401,076.25/880.64
  6. Step 6: Final answer
    x = 455.44

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