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Finding the Fourth Proportional to 676.08, 933.13 and 427.28

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Solution

The fourth proportional to 676.08, 933.13 and 427.28 is: 589.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.08 : 933.13 = 427.28 : x
  2. Step 2: Convert to fraction form
    676.08/933.13 = 427.28/x
  3. Step 3: Cross multiply
    676.08x = 933.13 × 427.28
  4. Step 4: Simplify right side
    676.08x = 398,704.39
  5. Step 5: Solve for x
    x = 398,704.39/676.08
  6. Step 6: Final answer
    x = 589.73

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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.