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Finding the Fourth Proportional to 1,114.83, 1,671.03 and 383.94

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Solution

The fourth proportional to 1,114.83, 1,671.03 and 383.94 is: 575.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,114.83 : 1,671.03 = 383.94 : x
  2. Step 2: Convert to fraction form
    1,114.83/1,671.03 = 383.94/x
  3. Step 3: Cross multiply
    1,114.83x = 1,671.03 × 383.94
  4. Step 4: Simplify right side
    1,114.83x = 641,575.26
  5. Step 5: Solve for x
    x = 641,575.26/1,114.83
  6. Step 6: Final answer
    x = 575.49

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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.