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Finding the Fourth Proportional to 940.44, 1,402.23 and 904.32

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Solution

The fourth proportional to 940.44, 1,402.23 and 904.32 is: 1,348.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    940.44 : 1,402.23 = 904.32 : x
  2. Step 2: Convert to fraction form
    940.44/1,402.23 = 904.32/x
  3. Step 3: Cross multiply
    940.44x = 1,402.23 × 904.32
  4. Step 4: Simplify right side
    940.44x = 1,268,064.63
  5. Step 5: Solve for x
    x = 1,268,064.63/940.44
  6. Step 6: Final answer
    x = 1,348.37

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.