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Finding the Fourth Proportional to 434.18, 599.21 and 247.63

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Solution

The fourth proportional to 434.18, 599.21 and 247.63 is: 341.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.18 : 599.21 = 247.63 : x
  2. Step 2: Convert to fraction form
    434.18/599.21 = 247.63/x
  3. Step 3: Cross multiply
    434.18x = 599.21 × 247.63
  4. Step 4: Simplify right side
    434.18x = 148,382.37
  5. Step 5: Solve for x
    x = 148,382.37/434.18
  6. Step 6: Final answer
    x = 341.75

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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.