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Finding the Fourth Proportional to 154.04, 229.40 and 148.65

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Solution

The fourth proportional to 154.04, 229.40 and 148.65 is: 221.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.04 : 229.40 = 148.65 : x
  2. Step 2: Convert to fraction form
    154.04/229.40 = 148.65/x
  3. Step 3: Cross multiply
    154.04x = 229.40 × 148.65
  4. Step 4: Simplify right side
    154.04x = 34,099.26
  5. Step 5: Solve for x
    x = 34,099.26/154.04
  6. Step 6: Final answer
    x = 221.37

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.