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Finding the Fourth Proportional to 1,425.37, 2,139.02 and 500.94

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Solution

The fourth proportional to 1,425.37, 2,139.02 and 500.94 is: 751.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.37 : 2,139.02 = 500.94 : x
  2. Step 2: Convert to fraction form
    1,425.37/2,139.02 = 500.94/x
  3. Step 3: Cross multiply
    1,425.37x = 2,139.02 × 500.94
  4. Step 4: Simplify right side
    1,425.37x = 1,071,520.68
  5. Step 5: Solve for x
    x = 1,071,520.68/1,425.37
  6. Step 6: Final answer
    x = 751.75

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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.