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Finding the Fourth Proportional to 370.10, 555.15 and 254.90

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Solution

The fourth proportional to 370.10, 555.15 and 254.90 is: 382.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.10 : 555.15 = 254.90 : x
  2. Step 2: Convert to fraction form
    370.10/555.15 = 254.90/x
  3. Step 3: Cross multiply
    370.10x = 555.15 × 254.90
  4. Step 4: Simplify right side
    370.10x = 141,507.74
  5. Step 5: Solve for x
    x = 141,507.74/370.10
  6. Step 6: Final answer
    x = 382.35

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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.