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Finding the Fourth Proportional to 154.08, 214.04 and 152.66

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Solution

The fourth proportional to 154.08, 214.04 and 152.66 is: 212.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.08 : 214.04 = 152.66 : x
  2. Step 2: Convert to fraction form
    154.08/214.04 = 152.66/x
  3. Step 3: Cross multiply
    154.08x = 214.04 × 152.66
  4. Step 4: Simplify right side
    154.08x = 32,673.51
  5. Step 5: Solve for x
    x = 32,673.51/154.08
  6. Step 6: Final answer
    x = 212.06

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.