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Finding the Fourth Proportional to 1,368.23, 2,051.84 and 490.49

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Solution

The fourth proportional to 1,368.23, 2,051.84 and 490.49 is: 735.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368.23 : 2,051.84 = 490.49 : x
  2. Step 2: Convert to fraction form
    1,368.23/2,051.84 = 490.49/x
  3. Step 3: Cross multiply
    1,368.23x = 2,051.84 × 490.49
  4. Step 4: Simplify right side
    1,368.23x = 1,006,413.36
  5. Step 5: Solve for x
    x = 1,006,413.36/1,368.23
  6. Step 6: Final answer
    x = 735.56

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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.