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Finding the Fourth Proportional to 1,088.92, 1,632.08 and 626.91

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Solution

The fourth proportional to 1,088.92, 1,632.08 and 626.91 is: 939.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.92 : 1,632.08 = 626.91 : x
  2. Step 2: Convert to fraction form
    1,088.92/1,632.08 = 626.91/x
  3. Step 3: Cross multiply
    1,088.92x = 1,632.08 × 626.91
  4. Step 4: Simplify right side
    1,088.92x = 1,023,155.98
  5. Step 5: Solve for x
    x = 1,023,155.98/1,088.92
  6. Step 6: Final answer
    x = 939.61

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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.