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Finding the Fourth Proportional to 676.19, 933.23 and 381.55

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Solution

The fourth proportional to 676.19, 933.23 and 381.55 is: 526.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.19 : 933.23 = 381.55 : x
  2. Step 2: Convert to fraction form
    676.19/933.23 = 381.55/x
  3. Step 3: Cross multiply
    676.19x = 933.23 × 381.55
  4. Step 4: Simplify right side
    676.19x = 356,073.91
  5. Step 5: Solve for x
    x = 356,073.91/676.19
  6. Step 6: Final answer
    x = 526.59

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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.