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Finding the Fourth Proportional to 558.32, 770.86 and 348.82

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Solution

The fourth proportional to 558.32, 770.86 and 348.82 is: 481.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.32 : 770.86 = 348.82 : x
  2. Step 2: Convert to fraction form
    558.32/770.86 = 348.82/x
  3. Step 3: Cross multiply
    558.32x = 770.86 × 348.82
  4. Step 4: Simplify right side
    558.32x = 268,891.39
  5. Step 5: Solve for x
    x = 268,891.39/558.32
  6. Step 6: Final answer
    x = 481.61

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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.