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Finding the Fourth Proportional to 1,087.23, 1,632.61 and 738.08

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Solution

The fourth proportional to 1,087.23, 1,632.61 and 738.08 is: 1,108.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.23 : 1,632.61 = 738.08 : x
  2. Step 2: Convert to fraction form
    1,087.23/1,632.61 = 738.08/x
  3. Step 3: Cross multiply
    1,087.23x = 1,632.61 × 738.08
  4. Step 4: Simplify right side
    1,087.23x = 1,204,995.67
  5. Step 5: Solve for x
    x = 1,204,995.67/1,087.23
  6. Step 6: Final answer
    x = 1,108.31

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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.