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Finding the Fourth Proportional to 210.61, 315.93 and 119.35

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Solution

The fourth proportional to 210.61, 315.93 and 119.35 is: 179.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.61 : 315.93 = 119.35 : x
  2. Step 2: Convert to fraction form
    210.61/315.93 = 119.35/x
  3. Step 3: Cross multiply
    210.61x = 315.93 × 119.35
  4. Step 4: Simplify right side
    210.61x = 37,706.25
  5. Step 5: Solve for x
    x = 37,706.25/210.61
  6. Step 6: Final answer
    x = 179.03

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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.