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Finding the Fourth Proportional to 607.93, 911.89 and 412.45

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Solution

The fourth proportional to 607.93, 911.89 and 412.45 is: 618.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.93 : 911.89 = 412.45 : x
  2. Step 2: Convert to fraction form
    607.93/911.89 = 412.45/x
  3. Step 3: Cross multiply
    607.93x = 911.89 × 412.45
  4. Step 4: Simplify right side
    607.93x = 376,104.01
  5. Step 5: Solve for x
    x = 376,104.01/607.93
  6. Step 6: Final answer
    x = 618.66

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Double scale
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Similar ratio
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1.5x scale

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.