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Finding the Fourth Proportional to 386.02, 533.28 and 303.13

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Solution

The fourth proportional to 386.02, 533.28 and 303.13 is: 418.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.02 : 533.28 = 303.13 : x
  2. Step 2: Convert to fraction form
    386.02/533.28 = 303.13/x
  3. Step 3: Cross multiply
    386.02x = 533.28 × 303.13
  4. Step 4: Simplify right side
    386.02x = 161,653.17
  5. Step 5: Solve for x
    x = 161,653.17/386.02
  6. Step 6: Final answer
    x = 418.77

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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.