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Finding the Fourth Proportional to 528.66, 732.60 and 518.94

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Solution

The fourth proportional to 528.66, 732.60 and 518.94 is: 719.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.66 : 732.60 = 518.94 : x
  2. Step 2: Convert to fraction form
    528.66/732.60 = 518.94/x
  3. Step 3: Cross multiply
    528.66x = 732.60 × 518.94
  4. Step 4: Simplify right side
    528.66x = 380,175.44
  5. Step 5: Solve for x
    x = 380,175.44/528.66
  6. Step 6: Final answer
    x = 719.13

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.