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Finding the Fourth Proportional to 572.54, 788.96 and 501.28

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Solution

The fourth proportional to 572.54, 788.96 and 501.28 is: 690.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.54 : 788.96 = 501.28 : x
  2. Step 2: Convert to fraction form
    572.54/788.96 = 501.28/x
  3. Step 3: Cross multiply
    572.54x = 788.96 × 501.28
  4. Step 4: Simplify right side
    572.54x = 395,489.87
  5. Step 5: Solve for x
    x = 395,489.87/572.54
  6. Step 6: Final answer
    x = 690.76

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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.