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Finding the Fourth Proportional to 1,088.49, 1,633.82 and 847.65

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Solution

The fourth proportional to 1,088.49, 1,633.82 and 847.65 is: 1,272.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.49 : 1,633.82 = 847.65 : x
  2. Step 2: Convert to fraction form
    1,088.49/1,633.82 = 847.65/x
  3. Step 3: Cross multiply
    1,088.49x = 1,633.82 × 847.65
  4. Step 4: Simplify right side
    1,088.49x = 1,384,907.52
  5. Step 5: Solve for x
    x = 1,384,907.52/1,088.49
  6. Step 6: Final answer
    x = 1,272.32

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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.