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Finding the Fourth Proportional to 220.65, 304.62 and 147.03

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Solution

The fourth proportional to 220.65, 304.62 and 147.03 is: 202.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.65 : 304.62 = 147.03 : x
  2. Step 2: Convert to fraction form
    220.65/304.62 = 147.03/x
  3. Step 3: Cross multiply
    220.65x = 304.62 × 147.03
  4. Step 4: Simplify right side
    220.65x = 44,788.28
  5. Step 5: Solve for x
    x = 44,788.28/220.65
  6. Step 6: Final answer
    x = 202.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.