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Finding the Fourth Proportional to 676.34, 933.26 and 381.60

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Solution

The fourth proportional to 676.34, 933.26 and 381.60 is: 526.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.34 : 933.26 = 381.60 : x
  2. Step 2: Convert to fraction form
    676.34/933.26 = 381.60/x
  3. Step 3: Cross multiply
    676.34x = 933.26 × 381.60
  4. Step 4: Simplify right side
    676.34x = 356,132.02
  5. Step 5: Solve for x
    x = 356,132.02/676.34
  6. Step 6: Final answer
    x = 526.56

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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.