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Finding the Fourth Proportional to 348.35, 521.91 and 310.68

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Solution

The fourth proportional to 348.35, 521.91 and 310.68 is: 465.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.35 : 521.91 = 310.68 : x
  2. Step 2: Convert to fraction form
    348.35/521.91 = 310.68/x
  3. Step 3: Cross multiply
    348.35x = 521.91 × 310.68
  4. Step 4: Simplify right side
    348.35x = 162,147.00
  5. Step 5: Solve for x
    x = 162,147.00/348.35
  6. Step 6: Final answer
    x = 465.48

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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.