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Finding the Fourth Proportional to 473.56, 654.42 and 386.20

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Solution

The fourth proportional to 473.56, 654.42 and 386.20 is: 533.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.56 : 654.42 = 386.20 : x
  2. Step 2: Convert to fraction form
    473.56/654.42 = 386.20/x
  3. Step 3: Cross multiply
    473.56x = 654.42 × 386.20
  4. Step 4: Simplify right side
    473.56x = 252,737.00
  5. Step 5: Solve for x
    x = 252,737.00/473.56
  6. Step 6: Final answer
    x = 533.70

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