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Finding the Fourth Proportional to 704.32, 1,051 and 631.68

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Solution

The fourth proportional to 704.32, 1,051 and 631.68 is: 942.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.32 : 1,051 = 631.68 : x
  2. Step 2: Convert to fraction form
    704.32/1,051 = 631.68/x
  3. Step 3: Cross multiply
    704.32x = 1,051 × 631.68
  4. Step 4: Simplify right side
    704.32x = 663,895.68
  5. Step 5: Solve for x
    x = 663,895.68/704.32
  6. Step 6: Final answer
    x = 942.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.