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Finding the Fourth Proportional to 1,088.32, 1,632.84 and 718.33

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Solution

The fourth proportional to 1,088.32, 1,632.84 and 718.33 is: 1,077.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.32 : 1,632.84 = 718.33 : x
  2. Step 2: Convert to fraction form
    1,088.32/1,632.84 = 718.33/x
  3. Step 3: Cross multiply
    1,088.32x = 1,632.84 × 718.33
  4. Step 4: Simplify right side
    1,088.32x = 1,172,917.96
  5. Step 5: Solve for x
    x = 1,172,917.96/1,088.32
  6. Step 6: Final answer
    x = 1,077.73

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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.