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Finding the Fourth Proportional to 468.42, 646.59 and 380.94

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Solution

The fourth proportional to 468.42, 646.59 and 380.94 is: 525.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.42 : 646.59 = 380.94 : x
  2. Step 2: Convert to fraction form
    468.42/646.59 = 380.94/x
  3. Step 3: Cross multiply
    468.42x = 646.59 × 380.94
  4. Step 4: Simplify right side
    468.42x = 246,311.99
  5. Step 5: Solve for x
    x = 246,311.99/468.42
  6. Step 6: Final answer
    x = 525.84

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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.