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Finding the Fourth Proportional to 538.34, 807.34 and 343.07

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Solution

The fourth proportional to 538.34, 807.34 and 343.07 is: 514.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.34 : 807.34 = 343.07 : x
  2. Step 2: Convert to fraction form
    538.34/807.34 = 343.07/x
  3. Step 3: Cross multiply
    538.34x = 807.34 × 343.07
  4. Step 4: Simplify right side
    538.34x = 276,970.10
  5. Step 5: Solve for x
    x = 276,970.10/538.34
  6. Step 6: Final answer
    x = 514.49

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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.