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Finding the Fourth Proportional to 371.36, 510.84 and 356.38

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Solution

The fourth proportional to 371.36, 510.84 and 356.38 is: 490.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.36 : 510.84 = 356.38 : x
  2. Step 2: Convert to fraction form
    371.36/510.84 = 356.38/x
  3. Step 3: Cross multiply
    371.36x = 510.84 × 356.38
  4. Step 4: Simplify right side
    371.36x = 182,053.16
  5. Step 5: Solve for x
    x = 182,053.16/371.36
  6. Step 6: Final answer
    x = 490.23

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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.