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Finding the Fourth Proportional to 371.99, 555.86 and 283.66

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Solution

The fourth proportional to 371.99, 555.86 and 283.66 is: 423.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.99 : 555.86 = 283.66 : x
  2. Step 2: Convert to fraction form
    371.99/555.86 = 283.66/x
  3. Step 3: Cross multiply
    371.99x = 555.86 × 283.66
  4. Step 4: Simplify right side
    371.99x = 157,675.25
  5. Step 5: Solve for x
    x = 157,675.25/371.99
  6. Step 6: Final answer
    x = 423.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.