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Finding the Fourth Proportional to 210.36, 314.61 and 137.05

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Solution

The fourth proportional to 210.36, 314.61 and 137.05 is: 204.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.36 : 314.61 = 137.05 : x
  2. Step 2: Convert to fraction form
    210.36/314.61 = 137.05/x
  3. Step 3: Cross multiply
    210.36x = 314.61 × 137.05
  4. Step 4: Simplify right side
    210.36x = 43,117.30
  5. Step 5: Solve for x
    x = 43,117.30/210.36
  6. Step 6: Final answer
    x = 204.97

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.