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Finding the Fourth Proportional to 1,154.16, 1,593.36 and 891.36

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Solution

The fourth proportional to 1,154.16, 1,593.36 and 891.36 is: 1,230.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,154.16 : 1,593.36 = 891.36 : x
  2. Step 2: Convert to fraction form
    1,154.16/1,593.36 = 891.36/x
  3. Step 3: Cross multiply
    1,154.16x = 1,593.36 × 891.36
  4. Step 4: Simplify right side
    1,154.16x = 1,420,257.37
  5. Step 5: Solve for x
    x = 1,420,257.37/1,154.16
  6. Step 6: Final answer
    x = 1,230.56

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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.