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Finding the Fourth Proportional to 901.73, 1,241.93 and 899.03

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Solution

The fourth proportional to 901.73, 1,241.93 and 899.03 is: 1,238.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.73 : 1,241.93 = 899.03 : x
  2. Step 2: Convert to fraction form
    901.73/1,241.93 = 899.03/x
  3. Step 3: Cross multiply
    901.73x = 1,241.93 × 899.03
  4. Step 4: Simplify right side
    901.73x = 1,116,537.68
  5. Step 5: Solve for x
    x = 1,116,537.68/901.73
  6. Step 6: Final answer
    x = 1,238.21

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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.