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Finding the Fourth Proportional to 385.45, 581.40 and 362.99

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Solution

The fourth proportional to 385.45, 581.40 and 362.99 is: 547.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    385.45 : 581.40 = 362.99 : x
  2. Step 2: Convert to fraction form
    385.45/581.40 = 362.99/x
  3. Step 3: Cross multiply
    385.45x = 581.40 × 362.99
  4. Step 4: Simplify right side
    385.45x = 211,042.39
  5. Step 5: Solve for x
    x = 211,042.39/385.45
  6. Step 6: Final answer
    x = 547.52

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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.