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Finding the Fourth Proportional to 548.60, 818.99 and 529.38

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Solution

The fourth proportional to 548.60, 818.99 and 529.38 is: 790.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.60 : 818.99 = 529.38 : x
  2. Step 2: Convert to fraction form
    548.60/818.99 = 529.38/x
  3. Step 3: Cross multiply
    548.60x = 818.99 × 529.38
  4. Step 4: Simplify right side
    548.60x = 433,558.25
  5. Step 5: Solve for x
    x = 433,558.25/548.60
  6. Step 6: Final answer
    x = 790.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.