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Finding the Fourth Proportional to 528.28, 790.44 and 500.50

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Solution

The fourth proportional to 528.28, 790.44 and 500.50 is: 748.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.28 : 790.44 = 500.50 : x
  2. Step 2: Convert to fraction form
    528.28/790.44 = 500.50/x
  3. Step 3: Cross multiply
    528.28x = 790.44 × 500.50
  4. Step 4: Simplify right side
    528.28x = 395,615.22
  5. Step 5: Solve for x
    x = 395,615.22/528.28
  6. Step 6: Final answer
    x = 748.87

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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.