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Finding the Fourth Proportional to 528.93, 798.18 and 513.54

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Solution

The fourth proportional to 528.93, 798.18 and 513.54 is: 774.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.93 : 798.18 = 513.54 : x
  2. Step 2: Convert to fraction form
    528.93/798.18 = 513.54/x
  3. Step 3: Cross multiply
    528.93x = 798.18 × 513.54
  4. Step 4: Simplify right side
    528.93x = 409,897.36
  5. Step 5: Solve for x
    x = 409,897.36/528.93
  6. Step 6: Final answer
    x = 774.96

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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.