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Finding the Fourth Proportional to 581.82, 873.20 and 513.48

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Solution

The fourth proportional to 581.82, 873.20 and 513.48 is: 770.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.82 : 873.20 = 513.48 : x
  2. Step 2: Convert to fraction form
    581.82/873.20 = 513.48/x
  3. Step 3: Cross multiply
    581.82x = 873.20 × 513.48
  4. Step 4: Simplify right side
    581.82x = 448,370.74
  5. Step 5: Solve for x
    x = 448,370.74/581.82
  6. Step 6: Final answer
    x = 770.63

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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.