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Finding the Fourth Proportional to 558.35, 770.50 and 348.42

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Solution

The fourth proportional to 558.35, 770.50 and 348.42 is: 480.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.35 : 770.50 = 348.42 : x
  2. Step 2: Convert to fraction form
    558.35/770.50 = 348.42/x
  3. Step 3: Cross multiply
    558.35x = 770.50 × 348.42
  4. Step 4: Simplify right side
    558.35x = 268,453.76
  5. Step 5: Solve for x
    x = 268,453.76/558.35
  6. Step 6: Final answer
    x = 480.80

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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.