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Finding the Fourth Proportional to 1,088.76, 1,633.12 and 439.94

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Solution

The fourth proportional to 1,088.76, 1,633.12 and 439.94 is: 659.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.76 : 1,633.12 = 439.94 : x
  2. Step 2: Convert to fraction form
    1,088.76/1,633.12 = 439.94/x
  3. Step 3: Cross multiply
    1,088.76x = 1,633.12 × 439.94
  4. Step 4: Simplify right side
    1,088.76x = 718,474.81
  5. Step 5: Solve for x
    x = 718,474.81/1,088.76
  6. Step 6: Final answer
    x = 659.90

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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.