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Finding the Fourth Proportional to 1,503.42, 2,249.65 and 887.42

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Solution

The fourth proportional to 1,503.42, 2,249.65 and 887.42 is: 1,327.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,503.42 : 2,249.65 = 887.42 : x
  2. Step 2: Convert to fraction form
    1,503.42/2,249.65 = 887.42/x
  3. Step 3: Cross multiply
    1,503.42x = 2,249.65 × 887.42
  4. Step 4: Simplify right side
    1,503.42x = 1,996,384.40
  5. Step 5: Solve for x
    x = 1,996,384.40/1,503.42
  6. Step 6: Final answer
    x = 1,327.90

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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.