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Finding the Fourth Proportional to 477.10, 658.41 and 290.60

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Solution

The fourth proportional to 477.10, 658.41 and 290.60 is: 401.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.10 : 658.41 = 290.60 : x
  2. Step 2: Convert to fraction form
    477.10/658.41 = 290.60/x
  3. Step 3: Cross multiply
    477.10x = 658.41 × 290.60
  4. Step 4: Simplify right side
    477.10x = 191,333.95
  5. Step 5: Solve for x
    x = 191,333.95/477.10
  6. Step 6: Final answer
    x = 401.04

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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.