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Finding the Fourth Proportional to 572.47, 789.29 and 467.45

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Solution

The fourth proportional to 572.47, 789.29 and 467.45 is: 644.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.47 : 789.29 = 467.45 : x
  2. Step 2: Convert to fraction form
    572.47/789.29 = 467.45/x
  3. Step 3: Cross multiply
    572.47x = 789.29 × 467.45
  4. Step 4: Simplify right side
    572.47x = 368,947.33
  5. Step 5: Solve for x
    x = 368,947.33/572.47
  6. Step 6: Final answer
    x = 644.49

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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.