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Finding the Fourth Proportional to 1,499.80, 2,249.30 and 525.80

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Solution

The fourth proportional to 1,499.80, 2,249.30 and 525.80 is: 788.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,499.80 : 2,249.30 = 525.80 : x
  2. Step 2: Convert to fraction form
    1,499.80/2,249.30 = 525.80/x
  3. Step 3: Cross multiply
    1,499.80x = 2,249.30 × 525.80
  4. Step 4: Simplify right side
    1,499.80x = 1,182,681.94
  5. Step 5: Solve for x
    x = 1,182,681.94/1,499.80
  6. Step 6: Final answer
    x = 788.56

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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.