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Finding the Fourth Proportional to 348.33, 521.90 and 210.95

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Solution

The fourth proportional to 348.33, 521.90 and 210.95 is: 316.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.33 : 521.90 = 210.95 : x
  2. Step 2: Convert to fraction form
    348.33/521.90 = 210.95/x
  3. Step 3: Cross multiply
    348.33x = 521.90 × 210.95
  4. Step 4: Simplify right side
    348.33x = 110,094.81
  5. Step 5: Solve for x
    x = 110,094.81/348.33
  6. Step 6: Final answer
    x = 316.06

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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.