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Finding the Fourth Proportional to 202.03, 278.42 and 146.67

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Solution

The fourth proportional to 202.03, 278.42 and 146.67 is: 202.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.03 : 278.42 = 146.67 : x
  2. Step 2: Convert to fraction form
    202.03/278.42 = 146.67/x
  3. Step 3: Cross multiply
    202.03x = 278.42 × 146.67
  4. Step 4: Simplify right side
    202.03x = 40,835.86
  5. Step 5: Solve for x
    x = 40,835.86/202.03
  6. Step 6: Final answer
    x = 202.13

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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.