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Finding the Fourth Proportional to 591.48, 891.81 and 539.64

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Solution

The fourth proportional to 591.48, 891.81 and 539.64 is: 813.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.48 : 891.81 = 539.64 : x
  2. Step 2: Convert to fraction form
    591.48/891.81 = 539.64/x
  3. Step 3: Cross multiply
    591.48x = 891.81 × 539.64
  4. Step 4: Simplify right side
    591.48x = 481,256.35
  5. Step 5: Solve for x
    x = 481,256.35/591.48
  6. Step 6: Final answer
    x = 813.65

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.