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Finding the Fourth Proportional to 1,588.16, 2,381.86 and 548.19

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Solution

The fourth proportional to 1,588.16, 2,381.86 and 548.19 is: 822.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,588.16 : 2,381.86 = 548.19 : x
  2. Step 2: Convert to fraction form
    1,588.16/2,381.86 = 548.19/x
  3. Step 3: Cross multiply
    1,588.16x = 2,381.86 × 548.19
  4. Step 4: Simplify right side
    1,588.16x = 1,305,716.13
  5. Step 5: Solve for x
    x = 1,305,716.13/1,588.16
  6. Step 6: Final answer
    x = 822.16

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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.