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Finding the Fourth Proportional to 369.70, 510.18 and 203.91

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Solution

The fourth proportional to 369.70, 510.18 and 203.91 is: 281.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.70 : 510.18 = 203.91 : x
  2. Step 2: Convert to fraction form
    369.70/510.18 = 203.91/x
  3. Step 3: Cross multiply
    369.70x = 510.18 × 203.91
  4. Step 4: Simplify right side
    369.70x = 104,028.13
  5. Step 5: Solve for x
    x = 104,028.13/369.70
  6. Step 6: Final answer
    x = 281.39

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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.