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Finding the Fourth Proportional to 612.33, 918.69 and 201.48

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Solution

The fourth proportional to 612.33, 918.69 and 201.48 is: 302.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.33 : 918.69 = 201.48 : x
  2. Step 2: Convert to fraction form
    612.33/918.69 = 201.48/x
  3. Step 3: Cross multiply
    612.33x = 918.69 × 201.48
  4. Step 4: Simplify right side
    612.33x = 185,097.66
  5. Step 5: Solve for x
    x = 185,097.66/612.33
  6. Step 6: Final answer
    x = 302.28

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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.