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Finding the Fourth Proportional to 1,513.48, 2,269.66 and 539.32

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Solution

The fourth proportional to 1,513.48, 2,269.66 and 539.32 is: 808.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,513.48 : 2,269.66 = 539.32 : x
  2. Step 2: Convert to fraction form
    1,513.48/2,269.66 = 539.32/x
  3. Step 3: Cross multiply
    1,513.48x = 2,269.66 × 539.32
  4. Step 4: Simplify right side
    1,513.48x = 1,224,073.03
  5. Step 5: Solve for x
    x = 1,224,073.03/1,513.48
  6. Step 6: Final answer
    x = 808.78

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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.