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Finding the Fourth Proportional to 612.06, 918.10 and 270.06

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Solution

The fourth proportional to 612.06, 918.10 and 270.06 is: 405.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.06 : 918.10 = 270.06 : x
  2. Step 2: Convert to fraction form
    612.06/918.10 = 270.06/x
  3. Step 3: Cross multiply
    612.06x = 918.10 × 270.06
  4. Step 4: Simplify right side
    612.06x = 247,942.09
  5. Step 5: Solve for x
    x = 247,942.09/612.06
  6. Step 6: Final answer
    x = 405.09

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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.