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Finding the Fourth Proportional to 385.55, 581.10 and 332.09

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Solution

The fourth proportional to 385.55, 581.10 and 332.09 is: 500.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    385.55 : 581.10 = 332.09 : x
  2. Step 2: Convert to fraction form
    385.55/581.10 = 332.09/x
  3. Step 3: Cross multiply
    385.55x = 581.10 × 332.09
  4. Step 4: Simplify right side
    385.55x = 192,977.50
  5. Step 5: Solve for x
    x = 192,977.50/385.55
  6. Step 6: Final answer
    x = 500.53

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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.