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Finding the Fourth Proportional to 304.96, 421.16 and 261.04

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Solution

The fourth proportional to 304.96, 421.16 and 261.04 is: 360.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    304.96 : 421.16 = 261.04 : x
  2. Step 2: Convert to fraction form
    304.96/421.16 = 261.04/x
  3. Step 3: Cross multiply
    304.96x = 421.16 × 261.04
  4. Step 4: Simplify right side
    304.96x = 109,939.61
  5. Step 5: Solve for x
    x = 109,939.61/304.96
  6. Step 6: Final answer
    x = 360.51

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.