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Finding the Fourth Proportional to 558.46, 770.16 and 361.75

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Solution

The fourth proportional to 558.46, 770.16 and 361.75 is: 498.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.46 : 770.16 = 361.75 : x
  2. Step 2: Convert to fraction form
    558.46/770.16 = 361.75/x
  3. Step 3: Cross multiply
    558.46x = 770.16 × 361.75
  4. Step 4: Simplify right side
    558.46x = 278,605.38
  5. Step 5: Solve for x
    x = 278,605.38/558.46
  6. Step 6: Final answer
    x = 498.88

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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.