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Finding the Fourth Proportional to 538.32, 742.62 and 341.76

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Solution

The fourth proportional to 538.32, 742.62 and 341.76 is: 471.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.32 : 742.62 = 341.76 : x
  2. Step 2: Convert to fraction form
    538.32/742.62 = 341.76/x
  3. Step 3: Cross multiply
    538.32x = 742.62 × 341.76
  4. Step 4: Simplify right side
    538.32x = 253,797.81
  5. Step 5: Solve for x
    x = 253,797.81/538.32
  6. Step 6: Final answer
    x = 471.46

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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.