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Finding the Fourth Proportional to 391.24, 586.14 and 304.84

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Solution

The fourth proportional to 391.24, 586.14 and 304.84 is: 456.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    391.24 : 586.14 = 304.84 : x
  2. Step 2: Convert to fraction form
    391.24/586.14 = 304.84/x
  3. Step 3: Cross multiply
    391.24x = 586.14 × 304.84
  4. Step 4: Simplify right side
    391.24x = 178,678.92
  5. Step 5: Solve for x
    x = 178,678.92/391.24
  6. Step 6: Final answer
    x = 456.70

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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.