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Finding the Fourth Proportional to 538.24, 805.95 and 342.76

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Solution

The fourth proportional to 538.24, 805.95 and 342.76 is: 513.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.24 : 805.95 = 342.76 : x
  2. Step 2: Convert to fraction form
    538.24/805.95 = 342.76/x
  3. Step 3: Cross multiply
    538.24x = 805.95 × 342.76
  4. Step 4: Simplify right side
    538.24x = 276,247.42
  5. Step 5: Solve for x
    x = 276,247.42/538.24
  6. Step 6: Final answer
    x = 513.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.