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Finding the Fourth Proportional to 1,137.03, 1,568.84 and 887.91

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Solution

The fourth proportional to 1,137.03, 1,568.84 and 887.91 is: 1,225.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137.03 : 1,568.84 = 887.91 : x
  2. Step 2: Convert to fraction form
    1,137.03/1,568.84 = 887.91/x
  3. Step 3: Cross multiply
    1,137.03x = 1,568.84 × 887.91
  4. Step 4: Simplify right side
    1,137.03x = 1,392,984.28
  5. Step 5: Solve for x
    x = 1,392,984.28/1,137.03
  6. Step 6: Final answer
    x = 1,225.11

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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.