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Finding the Fourth Proportional to 397.71, 597.78 and 349.11

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Solution

The fourth proportional to 397.71, 597.78 and 349.11 is: 524.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.71 : 597.78 = 349.11 : x
  2. Step 2: Convert to fraction form
    397.71/597.78 = 349.11/x
  3. Step 3: Cross multiply
    397.71x = 597.78 × 349.11
  4. Step 4: Simplify right side
    397.71x = 208,690.98
  5. Step 5: Solve for x
    x = 208,690.98/397.71
  6. Step 6: Final answer
    x = 524.73

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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.