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Finding the Fourth Proportional to 210.95, 314.87 and 195.70

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Solution

The fourth proportional to 210.95, 314.87 and 195.70 is: 292.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.95 : 314.87 = 195.70 : x
  2. Step 2: Convert to fraction form
    210.95/314.87 = 195.70/x
  3. Step 3: Cross multiply
    210.95x = 314.87 × 195.70
  4. Step 4: Simplify right side
    210.95x = 61,622.14
  5. Step 5: Solve for x
    x = 61,622.14/210.95
  6. Step 6: Final answer
    x = 292.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.