Home / 1,455.58-2,183.38-415.60

Finding the Fourth Proportional to 1,455.58, 2,183.38 and 415.60

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Solution

The fourth proportional to 1,455.58, 2,183.38 and 415.60 is: 623.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.58 : 2,183.38 = 415.60 : x
  2. Step 2: Convert to fraction form
    1,455.58/2,183.38 = 415.60/x
  3. Step 3: Cross multiply
    1,455.58x = 2,183.38 × 415.60
  4. Step 4: Simplify right side
    1,455.58x = 907,412.73
  5. Step 5: Solve for x
    x = 907,412.73/1,455.58
  6. Step 6: Final answer
    x = 623.40

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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.