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Finding the Fourth Proportional to 369.87, 510.33 and 212.49

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Solution

The fourth proportional to 369.87, 510.33 and 212.49 is: 293.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.87 : 510.33 = 212.49 : x
  2. Step 2: Convert to fraction form
    369.87/510.33 = 212.49/x
  3. Step 3: Cross multiply
    369.87x = 510.33 × 212.49
  4. Step 4: Simplify right side
    369.87x = 108,440.02
  5. Step 5: Solve for x
    x = 108,440.02/369.87
  6. Step 6: Final answer
    x = 293.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.