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Finding the Fourth Proportional to 552.72, 830.70 and 361.56

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Solution

The fourth proportional to 552.72, 830.70 and 361.56 is: 543.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.72 : 830.70 = 361.56 : x
  2. Step 2: Convert to fraction form
    552.72/830.70 = 361.56/x
  3. Step 3: Cross multiply
    552.72x = 830.70 × 361.56
  4. Step 4: Simplify right side
    552.72x = 300,347.89
  5. Step 5: Solve for x
    x = 300,347.89/552.72
  6. Step 6: Final answer
    x = 543.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.