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Finding the Fourth Proportional to 701.64, 1,051.82 and 316.68

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Solution

The fourth proportional to 701.64, 1,051.82 and 316.68 is: 474.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.64 : 1,051.82 = 316.68 : x
  2. Step 2: Convert to fraction form
    701.64/1,051.82 = 316.68/x
  3. Step 3: Cross multiply
    701.64x = 1,051.82 × 316.68
  4. Step 4: Simplify right side
    701.64x = 333,090.36
  5. Step 5: Solve for x
    x = 333,090.36/701.64
  6. Step 6: Final answer
    x = 474.73

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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.