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Finding the Fourth Proportional to 421.88, 582.08 and 244.77

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Solution

The fourth proportional to 421.88, 582.08 and 244.77 is: 337.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    421.88 : 582.08 = 244.77 : x
  2. Step 2: Convert to fraction form
    421.88/582.08 = 244.77/x
  3. Step 3: Cross multiply
    421.88x = 582.08 × 244.77
  4. Step 4: Simplify right side
    421.88x = 142,474.50
  5. Step 5: Solve for x
    x = 142,474.50/421.88
  6. Step 6: Final answer
    x = 337.72

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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.