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Finding the Fourth Proportional to 649.07, 973.62 and 162.12

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Solution

The fourth proportional to 649.07, 973.62 and 162.12 is: 243.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.07 : 973.62 = 162.12 : x
  2. Step 2: Convert to fraction form
    649.07/973.62 = 162.12/x
  3. Step 3: Cross multiply
    649.07x = 973.62 × 162.12
  4. Step 4: Simplify right side
    649.07x = 157,843.27
  5. Step 5: Solve for x
    x = 157,843.27/649.07
  6. Step 6: Final answer
    x = 243.19

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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.