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Finding the Fourth Proportional to 1,253.89, 1,879.81 and 524.01

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Solution

The fourth proportional to 1,253.89, 1,879.81 and 524.01 is: 785.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253.89 : 1,879.81 = 524.01 : x
  2. Step 2: Convert to fraction form
    1,253.89/1,879.81 = 524.01/x
  3. Step 3: Cross multiply
    1,253.89x = 1,879.81 × 524.01
  4. Step 4: Simplify right side
    1,253.89x = 985,037.93
  5. Step 5: Solve for x
    x = 985,037.93/1,253.89
  6. Step 6: Final answer
    x = 785.59

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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.