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Finding the Fourth Proportional to 363.34, 501.21 and 313.75

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Solution

The fourth proportional to 363.34, 501.21 and 313.75 is: 432.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.34 : 501.21 = 313.75 : x
  2. Step 2: Convert to fraction form
    363.34/501.21 = 313.75/x
  3. Step 3: Cross multiply
    363.34x = 501.21 × 313.75
  4. Step 4: Simplify right side
    363.34x = 157,254.09
  5. Step 5: Solve for x
    x = 157,254.09/363.34
  6. Step 6: Final answer
    x = 432.80

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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.