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Finding the Fourth Proportional to 210.56, 317.30 and 200.60

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Solution

The fourth proportional to 210.56, 317.30 and 200.60 is: 302.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.56 : 317.30 = 200.60 : x
  2. Step 2: Convert to fraction form
    210.56/317.30 = 200.60/x
  3. Step 3: Cross multiply
    210.56x = 317.30 × 200.60
  4. Step 4: Simplify right side
    210.56x = 63,650.38
  5. Step 5: Solve for x
    x = 63,650.38/210.56
  6. Step 6: Final answer
    x = 302.29

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.