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Finding the Fourth Proportional to 430.56, 593.76 and 280.92

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Solution

The fourth proportional to 430.56, 593.76 and 280.92 is: 387.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    430.56 : 593.76 = 280.92 : x
  2. Step 2: Convert to fraction form
    430.56/593.76 = 280.92/x
  3. Step 3: Cross multiply
    430.56x = 593.76 × 280.92
  4. Step 4: Simplify right side
    430.56x = 166,799.06
  5. Step 5: Solve for x
    x = 166,799.06/430.56
  6. Step 6: Final answer
    x = 387.40

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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.