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Finding the Fourth Proportional to 693.41, 956.90 and 382.91

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Solution

The fourth proportional to 693.41, 956.90 and 382.91 is: 528.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.41 : 956.90 = 382.91 : x
  2. Step 2: Convert to fraction form
    693.41/956.90 = 382.91/x
  3. Step 3: Cross multiply
    693.41x = 956.90 × 382.91
  4. Step 4: Simplify right side
    693.41x = 366,406.58
  5. Step 5: Solve for x
    x = 366,406.58/693.41
  6. Step 6: Final answer
    x = 528.41

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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.