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Finding the Fourth Proportional to 591.71, 815.87 and 480.84

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Solution

The fourth proportional to 591.71, 815.87 and 480.84 is: 663.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.71 : 815.87 = 480.84 : x
  2. Step 2: Convert to fraction form
    591.71/815.87 = 480.84/x
  3. Step 3: Cross multiply
    591.71x = 815.87 × 480.84
  4. Step 4: Simplify right side
    591.71x = 392,301.07
  5. Step 5: Solve for x
    x = 392,301.07/591.71
  6. Step 6: Final answer
    x = 663.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.