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Finding the Fourth Proportional to 434.66, 599.86 and 285.38

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Solution

The fourth proportional to 434.66, 599.86 and 285.38 is: 393.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.66 : 599.86 = 285.38 : x
  2. Step 2: Convert to fraction form
    434.66/599.86 = 285.38/x
  3. Step 3: Cross multiply
    434.66x = 599.86 × 285.38
  4. Step 4: Simplify right side
    434.66x = 171,185.76
  5. Step 5: Solve for x
    x = 171,185.76/434.66
  6. Step 6: Final answer
    x = 393.84

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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.