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Finding the Fourth Proportional to 429.30, 593.19 and 388.53

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Solution

The fourth proportional to 429.30, 593.19 and 388.53 is: 536.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    429.30 : 593.19 = 388.53 : x
  2. Step 2: Convert to fraction form
    429.30/593.19 = 388.53/x
  3. Step 3: Cross multiply
    429.30x = 593.19 × 388.53
  4. Step 4: Simplify right side
    429.30x = 230,472.11
  5. Step 5: Solve for x
    x = 230,472.11/429.30
  6. Step 6: Final answer
    x = 536.86

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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.