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Finding the Fourth Proportional to 526.28, 788.69 and 513.51

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Solution

The fourth proportional to 526.28, 788.69 and 513.51 is: 769.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.28 : 788.69 = 513.51 : x
  2. Step 2: Convert to fraction form
    526.28/788.69 = 513.51/x
  3. Step 3: Cross multiply
    526.28x = 788.69 × 513.51
  4. Step 4: Simplify right side
    526.28x = 404,997.63
  5. Step 5: Solve for x
    x = 404,997.63/526.28
  6. Step 6: Final answer
    x = 769.56

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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.