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Finding the Fourth Proportional to 903.98, 1,354.98 and 441.23

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Solution

The fourth proportional to 903.98, 1,354.98 and 441.23 is: 661.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.98 : 1,354.98 = 441.23 : x
  2. Step 2: Convert to fraction form
    903.98/1,354.98 = 441.23/x
  3. Step 3: Cross multiply
    903.98x = 1,354.98 × 441.23
  4. Step 4: Simplify right side
    903.98x = 597,857.83
  5. Step 5: Solve for x
    x = 597,857.83/903.98
  6. Step 6: Final answer
    x = 661.36

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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.