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Finding the Fourth Proportional to 1,094.80, 1,512 and 887.20

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Solution

The fourth proportional to 1,094.80, 1,512 and 887.20 is: 1,225.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,094.80 : 1,512 = 887.20 : x
  2. Step 2: Convert to fraction form
    1,094.80/1,512 = 887.20/x
  3. Step 3: Cross multiply
    1,094.80x = 1,512 × 887.20
  4. Step 4: Simplify right side
    1,094.80x = 1,341,446.40
  5. Step 5: Solve for x
    x = 1,341,446.40/1,094.80
  6. Step 6: Final answer
    x = 1,225.29

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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.