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Finding the Fourth Proportional to 405.60, 604.54 and 382.53

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Solution

The fourth proportional to 405.60, 604.54 and 382.53 is: 570.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    405.60 : 604.54 = 382.53 : x
  2. Step 2: Convert to fraction form
    405.60/604.54 = 382.53/x
  3. Step 3: Cross multiply
    405.60x = 604.54 × 382.53
  4. Step 4: Simplify right side
    405.60x = 231,253.73
  5. Step 5: Solve for x
    x = 231,253.73/405.60
  6. Step 6: Final answer
    x = 570.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.