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Finding the Fourth Proportional to 430.30, 593.81 and 243.79

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Solution

The fourth proportional to 430.30, 593.81 and 243.79 is: 336.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    430.30 : 593.81 = 243.79 : x
  2. Step 2: Convert to fraction form
    430.30/593.81 = 243.79/x
  3. Step 3: Cross multiply
    430.30x = 593.81 × 243.79
  4. Step 4: Simplify right side
    430.30x = 144,762.85
  5. Step 5: Solve for x
    x = 144,762.85/430.30
  6. Step 6: Final answer
    x = 336.42

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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.