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Finding the Fourth Proportional to 1,088.96, 1,633.45 and 395.65

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Solution

The fourth proportional to 1,088.96, 1,633.45 and 395.65 is: 593.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.96 : 1,633.45 = 395.65 : x
  2. Step 2: Convert to fraction form
    1,088.96/1,633.45 = 395.65/x
  3. Step 3: Cross multiply
    1,088.96x = 1,633.45 × 395.65
  4. Step 4: Simplify right side
    1,088.96x = 646,274.49
  5. Step 5: Solve for x
    x = 646,274.49/1,088.96
  6. Step 6: Final answer
    x = 593.48

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Double scale
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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.