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Finding the Fourth Proportional to 1,358.44, 2,038.22 and 492.84

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Solution

The fourth proportional to 1,358.44, 2,038.22 and 492.84 is: 739.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.44 : 2,038.22 = 492.84 : x
  2. Step 2: Convert to fraction form
    1,358.44/2,038.22 = 492.84/x
  3. Step 3: Cross multiply
    1,358.44x = 2,038.22 × 492.84
  4. Step 4: Simplify right side
    1,358.44x = 1,004,516.34
  5. Step 5: Solve for x
    x = 1,004,516.34/1,358.44
  6. Step 6: Final answer
    x = 739.46

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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.