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Finding the Fourth Proportional to 468.67, 646.21 and 384.37

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Solution

The fourth proportional to 468.67, 646.21 and 384.37 is: 529.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.67 : 646.21 = 384.37 : x
  2. Step 2: Convert to fraction form
    468.67/646.21 = 384.37/x
  3. Step 3: Cross multiply
    468.67x = 646.21 × 384.37
  4. Step 4: Simplify right side
    468.67x = 248,383.74
  5. Step 5: Solve for x
    x = 248,383.74/468.67
  6. Step 6: Final answer
    x = 529.98

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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.