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Finding the Fourth Proportional to 997.54, 1,376.78 and 604.76

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Solution

The fourth proportional to 997.54, 1,376.78 and 604.76 is: 834.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    997.54 : 1,376.78 = 604.76 : x
  2. Step 2: Convert to fraction form
    997.54/1,376.78 = 604.76/x
  3. Step 3: Cross multiply
    997.54x = 1,376.78 × 604.76
  4. Step 4: Simplify right side
    997.54x = 832,611.57
  5. Step 5: Solve for x
    x = 832,611.57/997.54
  6. Step 6: Final answer
    x = 834.67

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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.