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Finding the Fourth Proportional to 425.33, 586.90 and 238.77

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Solution

The fourth proportional to 425.33, 586.90 and 238.77 is: 329.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.33 : 586.90 = 238.77 : x
  2. Step 2: Convert to fraction form
    425.33/586.90 = 238.77/x
  3. Step 3: Cross multiply
    425.33x = 586.90 × 238.77
  4. Step 4: Simplify right side
    425.33x = 140,134.11
  5. Step 5: Solve for x
    x = 140,134.11/425.33
  6. Step 6: Final answer
    x = 329.47

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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.