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Finding the Fourth Proportional to 397.08, 547.65 and 370.55

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Solution

The fourth proportional to 397.08, 547.65 and 370.55 is: 511.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.08 : 547.65 = 370.55 : x
  2. Step 2: Convert to fraction form
    397.08/547.65 = 370.55/x
  3. Step 3: Cross multiply
    397.08x = 547.65 × 370.55
  4. Step 4: Simplify right side
    397.08x = 202,928.97
  5. Step 5: Solve for x
    x = 202,928.97/397.08
  6. Step 6: Final answer
    x = 511.05

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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.