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Finding the Fourth Proportional to 754.16, 1,129.80 and 363

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Solution

The fourth proportional to 754.16, 1,129.80 and 363 is: 543.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    754.16 : 1,129.80 = 363 : x
  2. Step 2: Convert to fraction form
    754.16/1,129.80 = 363/x
  3. Step 3: Cross multiply
    754.16x = 1,129.80 × 363
  4. Step 4: Simplify right side
    754.16x = 410,115.59
  5. Step 5: Solve for x
    x = 410,115.59/754.16
  6. Step 6: Final answer
    x = 543.81

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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.