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Finding the Fourth Proportional to 1,114.22, 1,671.23 and 383.81

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Solution

The fourth proportional to 1,114.22, 1,671.23 and 383.81 is: 575.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,114.22 : 1,671.23 = 383.81 : x
  2. Step 2: Convert to fraction form
    1,114.22/1,671.23 = 383.81/x
  3. Step 3: Cross multiply
    1,114.22x = 1,671.23 × 383.81
  4. Step 4: Simplify right side
    1,114.22x = 641,427.39
  5. Step 5: Solve for x
    x = 641,427.39/1,114.22
  6. Step 6: Final answer
    x = 575.67

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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.