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Finding the Fourth Proportional to 434.01, 650.15 and 398.57

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Solution

The fourth proportional to 434.01, 650.15 and 398.57 is: 597.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.01 : 650.15 = 398.57 : x
  2. Step 2: Convert to fraction form
    434.01/650.15 = 398.57/x
  3. Step 3: Cross multiply
    434.01x = 650.15 × 398.57
  4. Step 4: Simplify right side
    434.01x = 259,131.31
  5. Step 5: Solve for x
    x = 259,131.31/434.01
  6. Step 6: Final answer
    x = 597.07

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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.