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Finding the Fourth Proportional to 395.93, 549.36 and 384.59

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Solution

The fourth proportional to 395.93, 549.36 and 384.59 is: 533.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.93 : 549.36 = 384.59 : x
  2. Step 2: Convert to fraction form
    395.93/549.36 = 384.59/x
  3. Step 3: Cross multiply
    395.93x = 549.36 × 384.59
  4. Step 4: Simplify right side
    395.93x = 211,275.62
  5. Step 5: Solve for x
    x = 211,275.62/395.93
  6. Step 6: Final answer
    x = 533.63

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.