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Finding the Fourth Proportional to 494.69, 742.22 and 302.45

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Solution

The fourth proportional to 494.69, 742.22 and 302.45 is: 453.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.69 : 742.22 = 302.45 : x
  2. Step 2: Convert to fraction form
    494.69/742.22 = 302.45/x
  3. Step 3: Cross multiply
    494.69x = 742.22 × 302.45
  4. Step 4: Simplify right side
    494.69x = 224,482.93
  5. Step 5: Solve for x
    x = 224,482.93/494.69
  6. Step 6: Final answer
    x = 453.79

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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.