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Finding the Fourth Proportional to 433.78, 599.11 and 316.28

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Solution

The fourth proportional to 433.78, 599.11 and 316.28 is: 436.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.78 : 599.11 = 316.28 : x
  2. Step 2: Convert to fraction form
    433.78/599.11 = 316.28/x
  3. Step 3: Cross multiply
    433.78x = 599.11 × 316.28
  4. Step 4: Simplify right side
    433.78x = 189,482.72
  5. Step 5: Solve for x
    x = 189,482.72/433.78
  6. Step 6: Final answer
    x = 436.82

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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.