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Finding the Fourth Proportional to 500.36, 750.56 and 281.03

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Solution

The fourth proportional to 500.36, 750.56 and 281.03 is: 421.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.36 : 750.56 = 281.03 : x
  2. Step 2: Convert to fraction form
    500.36/750.56 = 281.03/x
  3. Step 3: Cross multiply
    500.36x = 750.56 × 281.03
  4. Step 4: Simplify right side
    500.36x = 210,924.72
  5. Step 5: Solve for x
    x = 210,924.72/500.36
  6. Step 6: Final answer
    x = 421.55

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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.