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Finding the Fourth Proportional to 294.50, 441.74 and 78.08

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Solution

The fourth proportional to 294.50, 441.74 and 78.08 is: 117.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.50 : 441.74 = 78.08 : x
  2. Step 2: Convert to fraction form
    294.50/441.74 = 78.08/x
  3. Step 3: Cross multiply
    294.50x = 441.74 × 78.08
  4. Step 4: Simplify right side
    294.50x = 34,488.46
  5. Step 5: Solve for x
    x = 34,488.46/294.50
  6. Step 6: Final answer
    x = 117.11

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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.