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Finding the Fourth Proportional to 477, 658.46 and 345.98

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Solution

The fourth proportional to 477, 658.46 and 345.98 is: 477.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    477 : 658.46 = 345.98 : x
  2. Step 2: Convert to fraction form
    477/658.46 = 345.98/x
  3. Step 3: Cross multiply
    477x = 658.46 × 345.98
  4. Step 4: Simplify right side
    477x = 227,813.99
  5. Step 5: Solve for x
    x = 227,813.99/477
  6. Step 6: Final answer
    x = 477.60

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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.