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Finding the Fourth Proportional to 662.07, 990.93 and 365.13

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Solution

The fourth proportional to 662.07, 990.93 and 365.13 is: 546.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.07 : 990.93 = 365.13 : x
  2. Step 2: Convert to fraction form
    662.07/990.93 = 365.13/x
  3. Step 3: Cross multiply
    662.07x = 990.93 × 365.13
  4. Step 4: Simplify right side
    662.07x = 361,822.43
  5. Step 5: Solve for x
    x = 361,822.43/662.07
  6. Step 6: Final answer
    x = 546.50

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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.