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Finding the Fourth Proportional to 294.72, 442.08 and 148.55

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Solution

The fourth proportional to 294.72, 442.08 and 148.55 is: 222.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.72 : 442.08 = 148.55 : x
  2. Step 2: Convert to fraction form
    294.72/442.08 = 148.55/x
  3. Step 3: Cross multiply
    294.72x = 442.08 × 148.55
  4. Step 4: Simplify right side
    294.72x = 65,668.77
  5. Step 5: Solve for x
    x = 65,668.77/294.72
  6. Step 6: Final answer
    x = 222.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.