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Finding the Fourth Proportional to 1,331.08, 1,995.54 and 465.28

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Solution

The fourth proportional to 1,331.08, 1,995.54 and 465.28 is: 697.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.08 : 1,995.54 = 465.28 : x
  2. Step 2: Convert to fraction form
    1,331.08/1,995.54 = 465.28/x
  3. Step 3: Cross multiply
    1,331.08x = 1,995.54 × 465.28
  4. Step 4: Simplify right side
    1,331.08x = 928,484.85
  5. Step 5: Solve for x
    x = 928,484.85/1,331.08
  6. Step 6: Final answer
    x = 697.54

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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.