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Finding the Fourth Proportional to 676.16, 933.13 and 381.43

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Solution

The fourth proportional to 676.16, 933.13 and 381.43 is: 526.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.16 : 933.13 = 381.43 : x
  2. Step 2: Convert to fraction form
    676.16/933.13 = 381.43/x
  3. Step 3: Cross multiply
    676.16x = 933.13 × 381.43
  4. Step 4: Simplify right side
    676.16x = 355,923.78
  5. Step 5: Solve for x
    x = 355,923.78/676.16
  6. Step 6: Final answer
    x = 526.39

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1.5x scale

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.