Home / 1,299.56-1,949.28-325.67

Finding the Fourth Proportional to 1,299.56, 1,949.28 and 325.67

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Solution

The fourth proportional to 1,299.56, 1,949.28 and 325.67 is: 488.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299.56 : 1,949.28 = 325.67 : x
  2. Step 2: Convert to fraction form
    1,299.56/1,949.28 = 325.67/x
  3. Step 3: Cross multiply
    1,299.56x = 1,949.28 × 325.67
  4. Step 4: Simplify right side
    1,299.56x = 634,822.02
  5. Step 5: Solve for x
    x = 634,822.02/1,299.56
  6. Step 6: Final answer
    x = 488.49

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Double scale
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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.