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Finding the Fourth Proportional to 1,626.89, 2,440.33 and 653.67

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Solution

The fourth proportional to 1,626.89, 2,440.33 and 653.67 is: 980.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,626.89 : 2,440.33 = 653.67 : x
  2. Step 2: Convert to fraction form
    1,626.89/2,440.33 = 653.67/x
  3. Step 3: Cross multiply
    1,626.89x = 2,440.33 × 653.67
  4. Step 4: Simplify right side
    1,626.89x = 1,595,168.88
  5. Step 5: Solve for x
    x = 1,595,168.88/1,626.89
  6. Step 6: Final answer
    x = 980.51

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.