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Finding the Fourth Proportional to 704.31, 1,056.60 and 357.66

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Solution

The fourth proportional to 704.31, 1,056.60 and 357.66 is: 536.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.31 : 1,056.60 = 357.66 : x
  2. Step 2: Convert to fraction form
    704.31/1,056.60 = 357.66/x
  3. Step 3: Cross multiply
    704.31x = 1,056.60 × 357.66
  4. Step 4: Simplify right side
    704.31x = 377,903.56
  5. Step 5: Solve for x
    x = 377,903.56/704.31
  6. Step 6: Final answer
    x = 536.56

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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.