Home / 1,088.20-1,631.97-308.14

Finding the Fourth Proportional to 1,088.20, 1,631.97 and 308.14

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Solution

The fourth proportional to 1,088.20, 1,631.97 and 308.14 is: 462.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.20 : 1,631.97 = 308.14 : x
  2. Step 2: Convert to fraction form
    1,088.20/1,631.97 = 308.14/x
  3. Step 3: Cross multiply
    1,088.20x = 1,631.97 × 308.14
  4. Step 4: Simplify right side
    1,088.20x = 502,875.24
  5. Step 5: Solve for x
    x = 502,875.24/1,088.20
  6. Step 6: Final answer
    x = 462.12

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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.