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Finding the Fourth Proportional to 1,360.11, 2,040.17 and 435.67

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Solution

The fourth proportional to 1,360.11, 2,040.17 and 435.67 is: 653.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.11 : 2,040.17 = 435.67 : x
  2. Step 2: Convert to fraction form
    1,360.11/2,040.17 = 435.67/x
  3. Step 3: Cross multiply
    1,360.11x = 2,040.17 × 435.67
  4. Step 4: Simplify right side
    1,360.11x = 888,840.86
  5. Step 5: Solve for x
    x = 888,840.86/1,360.11
  6. Step 6: Final answer
    x = 653.51

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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.