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Finding the Fourth Proportional to 369.89, 510.53 and 220.55

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Solution

The fourth proportional to 369.89, 510.53 and 220.55 is: 304.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.89 : 510.53 = 220.55 : x
  2. Step 2: Convert to fraction form
    369.89/510.53 = 220.55/x
  3. Step 3: Cross multiply
    369.89x = 510.53 × 220.55
  4. Step 4: Simplify right side
    369.89x = 112,597.57
  5. Step 5: Solve for x
    x = 112,597.57/369.89
  6. Step 6: Final answer
    x = 304.41

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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.