Home / 1,088.19-1,631.07-438.84

Finding the Fourth Proportional to 1,088.19, 1,631.07 and 438.84

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Solution

The fourth proportional to 1,088.19, 1,631.07 and 438.84 is: 657.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.19 : 1,631.07 = 438.84 : x
  2. Step 2: Convert to fraction form
    1,088.19/1,631.07 = 438.84/x
  3. Step 3: Cross multiply
    1,088.19x = 1,631.07 × 438.84
  4. Step 4: Simplify right side
    1,088.19x = 715,778.76
  5. Step 5: Solve for x
    x = 715,778.76/1,088.19
  6. Step 6: Final answer
    x = 657.77

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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.