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Finding the Fourth Proportional to 876, 1,314.36 and 534

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Solution

The fourth proportional to 876, 1,314.36 and 534 is: 801.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    876 : 1,314.36 = 534 : x
  2. Step 2: Convert to fraction form
    876/1,314.36 = 534/x
  3. Step 3: Cross multiply
    876x = 1,314.36 × 534
  4. Step 4: Simplify right side
    876x = 701,868.24
  5. Step 5: Solve for x
    x = 701,868.24/876
  6. Step 6: Final answer
    x = 801.22

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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.