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Finding the Fourth Proportional to 218.14, 301.08 and 152.62

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Solution

The fourth proportional to 218.14, 301.08 and 152.62 is: 210.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.14 : 301.08 = 152.62 : x
  2. Step 2: Convert to fraction form
    218.14/301.08 = 152.62/x
  3. Step 3: Cross multiply
    218.14x = 301.08 × 152.62
  4. Step 4: Simplify right side
    218.14x = 45,950.83
  5. Step 5: Solve for x
    x = 45,950.83/218.14
  6. Step 6: Final answer
    x = 210.65

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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.