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Finding the Fourth Proportional to 464.01, 639.33 and 332.79

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Solution

The fourth proportional to 464.01, 639.33 and 332.79 is: 458.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.01 : 639.33 = 332.79 : x
  2. Step 2: Convert to fraction form
    464.01/639.33 = 332.79/x
  3. Step 3: Cross multiply
    464.01x = 639.33 × 332.79
  4. Step 4: Simplify right side
    464.01x = 212,762.63
  5. Step 5: Solve for x
    x = 212,762.63/464.01
  6. Step 6: Final answer
    x = 458.53

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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.