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Finding the Fourth Proportional to 591.40, 882.90 and 548.57

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Solution

The fourth proportional to 591.40, 882.90 and 548.57 is: 818.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.40 : 882.90 = 548.57 : x
  2. Step 2: Convert to fraction form
    591.40/882.90 = 548.57/x
  3. Step 3: Cross multiply
    591.40x = 882.90 × 548.57
  4. Step 4: Simplify right side
    591.40x = 484,334.66
  5. Step 5: Solve for x
    x = 484,334.66/591.40
  6. Step 6: Final answer
    x = 818.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.