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Finding the Fourth Proportional to 704.23, 1,056.16 and 210.52

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Solution

The fourth proportional to 704.23, 1,056.16 and 210.52 is: 315.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.23 : 1,056.16 = 210.52 : x
  2. Step 2: Convert to fraction form
    704.23/1,056.16 = 210.52/x
  3. Step 3: Cross multiply
    704.23x = 1,056.16 × 210.52
  4. Step 4: Simplify right side
    704.23x = 222,342.80
  5. Step 5: Solve for x
    x = 222,342.80/704.23
  6. Step 6: Final answer
    x = 315.72

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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.