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Finding the Fourth Proportional to 2,154.45, 3,232.59 and 694.02

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Solution

The fourth proportional to 2,154.45, 3,232.59 and 694.02 is: 1,041.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.45 : 3,232.59 = 694.02 : x
  2. Step 2: Convert to fraction form
    2,154.45/3,232.59 = 694.02/x
  3. Step 3: Cross multiply
    2,154.45x = 3,232.59 × 694.02
  4. Step 4: Simplify right side
    2,154.45x = 2,243,482.11
  5. Step 5: Solve for x
    x = 2,243,482.11/2,154.45
  6. Step 6: Final answer
    x = 1,041.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.