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Finding the Fourth Proportional to 1,137.56, 1,563.02 and 904.28

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Solution

The fourth proportional to 1,137.56, 1,563.02 and 904.28 is: 1,242.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137.56 : 1,563.02 = 904.28 : x
  2. Step 2: Convert to fraction form
    1,137.56/1,563.02 = 904.28/x
  3. Step 3: Cross multiply
    1,137.56x = 1,563.02 × 904.28
  4. Step 4: Simplify right side
    1,137.56x = 1,413,399.91
  5. Step 5: Solve for x
    x = 1,413,399.91/1,137.56
  6. Step 6: Final answer
    x = 1,242.49

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.