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Finding the Fourth Proportional to 351.80, 485.64 and 232.16

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Solution

The fourth proportional to 351.80, 485.64 and 232.16 is: 320.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.80 : 485.64 = 232.16 : x
  2. Step 2: Convert to fraction form
    351.80/485.64 = 232.16/x
  3. Step 3: Cross multiply
    351.80x = 485.64 × 232.16
  4. Step 4: Simplify right side
    351.80x = 112,746.18
  5. Step 5: Solve for x
    x = 112,746.18/351.80
  6. Step 6: Final answer
    x = 320.48

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Why These Related Problems?

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