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Finding the Fourth Proportional to 591.73, 887.68 and 317.45

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Solution

The fourth proportional to 591.73, 887.68 and 317.45 is: 476.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.73 : 887.68 = 317.45 : x
  2. Step 2: Convert to fraction form
    591.73/887.68 = 317.45/x
  3. Step 3: Cross multiply
    591.73x = 887.68 × 317.45
  4. Step 4: Simplify right side
    591.73x = 281,790.21
  5. Step 5: Solve for x
    x = 281,790.21/591.73
  6. Step 6: Final answer
    x = 476.21

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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.