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Finding the Fourth Proportional to 147.08, 202.55 and 143.89

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Solution

The fourth proportional to 147.08, 202.55 and 143.89 is: 198.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.08 : 202.55 = 143.89 : x
  2. Step 2: Convert to fraction form
    147.08/202.55 = 143.89/x
  3. Step 3: Cross multiply
    147.08x = 202.55 × 143.89
  4. Step 4: Simplify right side
    147.08x = 29,144.52
  5. Step 5: Solve for x
    x = 29,144.52/147.08
  6. Step 6: Final answer
    x = 198.16

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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.