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Finding the Fourth Proportional to 1,584.01, 2,185.45 and 920.73

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Solution

The fourth proportional to 1,584.01, 2,185.45 and 920.73 is: 1,270.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,584.01 : 2,185.45 = 920.73 : x
  2. Step 2: Convert to fraction form
    1,584.01/2,185.45 = 920.73/x
  3. Step 3: Cross multiply
    1,584.01x = 2,185.45 × 920.73
  4. Step 4: Simplify right side
    1,584.01x = 2,012,209.38
  5. Step 5: Solve for x
    x = 2,012,209.38/1,584.01
  6. Step 6: Final answer
    x = 1,270.33

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Half scale
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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.