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Finding the Fourth Proportional to 1,355.58, 2,032.74 and 662.28

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Solution

The fourth proportional to 1,355.58, 2,032.74 and 662.28 is: 993.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355.58 : 2,032.74 = 662.28 : x
  2. Step 2: Convert to fraction form
    1,355.58/2,032.74 = 662.28/x
  3. Step 3: Cross multiply
    1,355.58x = 2,032.74 × 662.28
  4. Step 4: Simplify right side
    1,355.58x = 1,346,243.05
  5. Step 5: Solve for x
    x = 1,346,243.05/1,355.58
  6. Step 6: Final answer
    x = 993.11

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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.