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Finding the Fourth Proportional to 572.13, 788.48 and 447.59

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Solution

The fourth proportional to 572.13, 788.48 and 447.59 is: 616.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.13 : 788.48 = 447.59 : x
  2. Step 2: Convert to fraction form
    572.13/788.48 = 447.59/x
  3. Step 3: Cross multiply
    572.13x = 788.48 × 447.59
  4. Step 4: Simplify right side
    572.13x = 352,913.53
  5. Step 5: Solve for x
    x = 352,913.53/572.13
  6. Step 6: Final answer
    x = 616.84

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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.