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Finding the Fourth Proportional to 654.89, 981.49 and 500.25

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Solution

The fourth proportional to 654.89, 981.49 and 500.25 is: 749.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.89 : 981.49 = 500.25 : x
  2. Step 2: Convert to fraction form
    654.89/981.49 = 500.25/x
  3. Step 3: Cross multiply
    654.89x = 981.49 × 500.25
  4. Step 4: Simplify right side
    654.89x = 490,990.37
  5. Step 5: Solve for x
    x = 490,990.37/654.89
  6. Step 6: Final answer
    x = 749.73

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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.