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Finding the Fourth Proportional to 1,091.51, 1,634.43 and 603.89

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Solution

The fourth proportional to 1,091.51, 1,634.43 and 603.89 is: 904.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091.51 : 1,634.43 = 603.89 : x
  2. Step 2: Convert to fraction form
    1,091.51/1,634.43 = 603.89/x
  3. Step 3: Cross multiply
    1,091.51x = 1,634.43 × 603.89
  4. Step 4: Simplify right side
    1,091.51x = 987,015.93
  5. Step 5: Solve for x
    x = 987,015.93/1,091.51
  6. Step 6: Final answer
    x = 904.27

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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.