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Finding the Fourth Proportional to 658.37, 986.90 and 292.86

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Solution

The fourth proportional to 658.37, 986.90 and 292.86 is: 439.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.37 : 986.90 = 292.86 : x
  2. Step 2: Convert to fraction form
    658.37/986.90 = 292.86/x
  3. Step 3: Cross multiply
    658.37x = 986.90 × 292.86
  4. Step 4: Simplify right side
    658.37x = 289,023.53
  5. Step 5: Solve for x
    x = 289,023.53/658.37
  6. Step 6: Final answer
    x = 439.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.