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Finding the Fourth Proportional to 814.98, 1,124.87 and 483.54

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Solution

The fourth proportional to 814.98, 1,124.87 and 483.54 is: 667.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    814.98 : 1,124.87 = 483.54 : x
  2. Step 2: Convert to fraction form
    814.98/1,124.87 = 483.54/x
  3. Step 3: Cross multiply
    814.98x = 1,124.87 × 483.54
  4. Step 4: Simplify right side
    814.98x = 543,919.64
  5. Step 5: Solve for x
    x = 543,919.64/814.98
  6. Step 6: Final answer
    x = 667.40

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.