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Finding the Fourth Proportional to 372.80, 555.02 and 371.00

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Solution

The fourth proportional to 372.80, 555.02 and 371.00 is: 552.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.80 : 555.02 = 371.00 : x
  2. Step 2: Convert to fraction form
    372.80/555.02 = 371.00/x
  3. Step 3: Cross multiply
    372.80x = 555.02 × 371.00
  4. Step 4: Simplify right side
    372.80x = 205,907.79
  5. Step 5: Solve for x
    x = 205,907.79/372.80
  6. Step 6: Final answer
    x = 552.34

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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.