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Finding the Fourth Proportional to 439.63, 658.94 and 242.06

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Solution

The fourth proportional to 439.63, 658.94 and 242.06 is: 362.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.63 : 658.94 = 242.06 : x
  2. Step 2: Convert to fraction form
    439.63/658.94 = 242.06/x
  3. Step 3: Cross multiply
    439.63x = 658.94 × 242.06
  4. Step 4: Simplify right side
    439.63x = 159,498.51
  5. Step 5: Solve for x
    x = 159,498.51/439.63
  6. Step 6: Final answer
    x = 362.80

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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.