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Finding the Fourth Proportional to 154.79, 214.62 and 146.60

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Solution

The fourth proportional to 154.79, 214.62 and 146.60 is: 203.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.79 : 214.62 = 146.60 : x
  2. Step 2: Convert to fraction form
    154.79/214.62 = 146.60/x
  3. Step 3: Cross multiply
    154.79x = 214.62 × 146.60
  4. Step 4: Simplify right side
    154.79x = 31,462.22
  5. Step 5: Solve for x
    x = 31,462.22/154.79
  6. Step 6: Final answer
    x = 203.26

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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.