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Finding the Fourth Proportional to 1,495.68, 2,243.60 and 455.72

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Solution

The fourth proportional to 1,495.68, 2,243.60 and 455.72 is: 683.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,495.68 : 2,243.60 = 455.72 : x
  2. Step 2: Convert to fraction form
    1,495.68/2,243.60 = 455.72/x
  3. Step 3: Cross multiply
    1,495.68x = 2,243.60 × 455.72
  4. Step 4: Simplify right side
    1,495.68x = 1,022,441.60
  5. Step 5: Solve for x
    x = 1,022,441.60/1,495.68
  6. Step 6: Final answer
    x = 683.60

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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.