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Finding the Fourth Proportional to 363.51, 501.13 and 310.82

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Solution

The fourth proportional to 363.51, 501.13 and 310.82 is: 428.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.51 : 501.13 = 310.82 : x
  2. Step 2: Convert to fraction form
    363.51/501.13 = 310.82/x
  3. Step 3: Cross multiply
    363.51x = 501.13 × 310.82
  4. Step 4: Simplify right side
    363.51x = 155,761.23
  5. Step 5: Solve for x
    x = 155,761.23/363.51
  6. Step 6: Final answer
    x = 428.49

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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.