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Finding the Fourth Proportional to 607.50, 911.86 and 443.48

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Solution

The fourth proportional to 607.50, 911.86 and 443.48 is: 665.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.50 : 911.86 = 443.48 : x
  2. Step 2: Convert to fraction form
    607.50/911.86 = 443.48/x
  3. Step 3: Cross multiply
    607.50x = 911.86 × 443.48
  4. Step 4: Simplify right side
    607.50x = 404,386.00
  5. Step 5: Solve for x
    x = 404,386.00/607.50
  6. Step 6: Final answer
    x = 665.66

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Double scale
Find fourth proportional to 608.50, 913.36 and 444.48
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.