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Finding the Fourth Proportional to 202.91, 302.06 and 202.30

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Solution

The fourth proportional to 202.91, 302.06 and 202.30 is: 301.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.91 : 302.06 = 202.30 : x
  2. Step 2: Convert to fraction form
    202.91/302.06 = 202.30/x
  3. Step 3: Cross multiply
    202.91x = 302.06 × 202.30
  4. Step 4: Simplify right side
    202.91x = 61,106.49
  5. Step 5: Solve for x
    x = 61,106.49/202.91
  6. Step 6: Final answer
    x = 301.16

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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.