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Finding the Fourth Proportional to 639.14, 957.96 and 566.16

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Solution

The fourth proportional to 639.14, 957.96 and 566.16 is: 848.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    639.14 : 957.96 = 566.16 : x
  2. Step 2: Convert to fraction form
    639.14/957.96 = 566.16/x
  3. Step 3: Cross multiply
    639.14x = 957.96 × 566.16
  4. Step 4: Simplify right side
    639.14x = 542,358.63
  5. Step 5: Solve for x
    x = 542,358.63/639.14
  6. Step 6: Final answer
    x = 848.58

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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.