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Finding the Fourth Proportional to 430.36, 593.80 and 243.80

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Solution

The fourth proportional to 430.36, 593.80 and 243.80 is: 336.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    430.36 : 593.80 = 243.80 : x
  2. Step 2: Convert to fraction form
    430.36/593.80 = 243.80/x
  3. Step 3: Cross multiply
    430.36x = 593.80 × 243.80
  4. Step 4: Simplify right side
    430.36x = 144,769.82
  5. Step 5: Solve for x
    x = 144,769.82/430.36
  6. Step 6: Final answer
    x = 336.39

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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.