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Finding the Fourth Proportional to 976.10, 1,347 and 534

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Solution

The fourth proportional to 976.10, 1,347 and 534 is: 736.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    976.10 : 1,347 = 534 : x
  2. Step 2: Convert to fraction form
    976.10/1,347 = 534/x
  3. Step 3: Cross multiply
    976.10x = 1,347 × 534
  4. Step 4: Simplify right side
    976.10x = 719,298
  5. Step 5: Solve for x
    x = 719,298/976.10
  6. Step 6: Final answer
    x = 736.91

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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.