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Finding the Fourth Proportional to 904.08, 1,356.12 and 220.08

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Solution

The fourth proportional to 904.08, 1,356.12 and 220.08 is: 330.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    904.08 : 1,356.12 = 220.08 : x
  2. Step 2: Convert to fraction form
    904.08/1,356.12 = 220.08/x
  3. Step 3: Cross multiply
    904.08x = 1,356.12 × 220.08
  4. Step 4: Simplify right side
    904.08x = 298,454.89
  5. Step 5: Solve for x
    x = 298,454.89/904.08
  6. Step 6: Final answer
    x = 330.12

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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.