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Finding the Fourth Proportional to 371.02, 555.02 and 347.98

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Solution

The fourth proportional to 371.02, 555.02 and 347.98 is: 520.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.02 : 555.02 = 347.98 : x
  2. Step 2: Convert to fraction form
    371.02/555.02 = 347.98/x
  3. Step 3: Cross multiply
    371.02x = 555.02 × 347.98
  4. Step 4: Simplify right side
    371.02x = 193,135.86
  5. Step 5: Solve for x
    x = 193,135.86/371.02
  6. Step 6: Final answer
    x = 520.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.