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Finding the Fourth Proportional to 639.24, 957.45 and 365.16

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Solution

The fourth proportional to 639.24, 957.45 and 365.16 is: 546.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    639.24 : 957.45 = 365.16 : x
  2. Step 2: Convert to fraction form
    639.24/957.45 = 365.16/x
  3. Step 3: Cross multiply
    639.24x = 957.45 × 365.16
  4. Step 4: Simplify right side
    639.24x = 349,622.44
  5. Step 5: Solve for x
    x = 349,622.44/639.24
  6. Step 6: Final answer
    x = 546.93

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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.