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Finding the Fourth Proportional to 591.45, 885.36 and 385.58

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Solution

The fourth proportional to 591.45, 885.36 and 385.58 is: 577.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.45 : 885.36 = 385.58 : x
  2. Step 2: Convert to fraction form
    591.45/885.36 = 385.58/x
  3. Step 3: Cross multiply
    591.45x = 885.36 × 385.58
  4. Step 4: Simplify right side
    591.45x = 341,370.75
  5. Step 5: Solve for x
    x = 341,370.75/591.45
  6. Step 6: Final answer
    x = 577.18

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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.