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Finding the Fourth Proportional to 637.47, 880.47 and 528.39

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Solution

The fourth proportional to 637.47, 880.47 and 528.39 is: 729.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.47 : 880.47 = 528.39 : x
  2. Step 2: Convert to fraction form
    637.47/880.47 = 528.39/x
  3. Step 3: Cross multiply
    637.47x = 880.47 × 528.39
  4. Step 4: Simplify right side
    637.47x = 465,231.54
  5. Step 5: Solve for x
    x = 465,231.54/637.47
  6. Step 6: Final answer
    x = 729.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.