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Finding the Fourth Proportional to 434.58, 599.70 and 238.11

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Solution

The fourth proportional to 434.58, 599.70 and 238.11 is: 328.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.58 : 599.70 = 238.11 : x
  2. Step 2: Convert to fraction form
    434.58/599.70 = 238.11/x
  3. Step 3: Cross multiply
    434.58x = 599.70 × 238.11
  4. Step 4: Simplify right side
    434.58x = 142,793.21
  5. Step 5: Solve for x
    x = 142,793.21/434.58
  6. Step 6: Final answer
    x = 328.58

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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.