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Finding the Fourth Proportional to 350.80, 483.76 and 256.18

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Solution

The fourth proportional to 350.80, 483.76 and 256.18 is: 353.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.80 : 483.76 = 256.18 : x
  2. Step 2: Convert to fraction form
    350.80/483.76 = 256.18/x
  3. Step 3: Cross multiply
    350.80x = 483.76 × 256.18
  4. Step 4: Simplify right side
    350.80x = 123,929.64
  5. Step 5: Solve for x
    x = 123,929.64/350.80
  6. Step 6: Final answer
    x = 353.28

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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.