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Finding the Fourth Proportional to 369.89, 509.99 and 271.47

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Solution

The fourth proportional to 369.89, 509.99 and 271.47 is: 374.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.89 : 509.99 = 271.47 : x
  2. Step 2: Convert to fraction form
    369.89/509.99 = 271.47/x
  3. Step 3: Cross multiply
    369.89x = 509.99 × 271.47
  4. Step 4: Simplify right side
    369.89x = 138,445.63
  5. Step 5: Solve for x
    x = 138,445.63/369.89
  6. Step 6: Final answer
    x = 374.29

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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.