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Finding the Fourth Proportional to 553.94, 829.82 and 476.90

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Solution

The fourth proportional to 553.94, 829.82 and 476.90 is: 714.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.94 : 829.82 = 476.90 : x
  2. Step 2: Convert to fraction form
    553.94/829.82 = 476.90/x
  3. Step 3: Cross multiply
    553.94x = 829.82 × 476.90
  4. Step 4: Simplify right side
    553.94x = 395,741.16
  5. Step 5: Solve for x
    x = 395,741.16/553.94
  6. Step 6: Final answer
    x = 714.41

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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.