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Finding the Fourth Proportional to 1,603.22, 2,212.44 and 904.59

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Solution

The fourth proportional to 1,603.22, 2,212.44 and 904.59 is: 1,248.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,603.22 : 2,212.44 = 904.59 : x
  2. Step 2: Convert to fraction form
    1,603.22/2,212.44 = 904.59/x
  3. Step 3: Cross multiply
    1,603.22x = 2,212.44 × 904.59
  4. Step 4: Simplify right side
    1,603.22x = 2,001,351.10
  5. Step 5: Solve for x
    x = 2,001,351.10/1,603.22
  6. Step 6: Final answer
    x = 1,248.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.