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Finding the Fourth Proportional to 364.12, 544.82 and 285.76

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Solution

The fourth proportional to 364.12, 544.82 and 285.76 is: 427.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.12 : 544.82 = 285.76 : x
  2. Step 2: Convert to fraction form
    364.12/544.82 = 285.76/x
  3. Step 3: Cross multiply
    364.12x = 544.82 × 285.76
  4. Step 4: Simplify right side
    364.12x = 155,683.61
  5. Step 5: Solve for x
    x = 155,683.61/364.12
  6. Step 6: Final answer
    x = 427.56

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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.