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Finding the Fourth Proportional to 464.42, 640.93 and 254.59

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Solution

The fourth proportional to 464.42, 640.93 and 254.59 is: 351.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.42 : 640.93 = 254.59 : x
  2. Step 2: Convert to fraction form
    464.42/640.93 = 254.59/x
  3. Step 3: Cross multiply
    464.42x = 640.93 × 254.59
  4. Step 4: Simplify right side
    464.42x = 163,173.10
  5. Step 5: Solve for x
    x = 163,173.10/464.42
  6. Step 6: Final answer
    x = 351.35

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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.