Home / 1,110.32-1,665.22-330.10

Finding the Fourth Proportional to 1,110.32, 1,665.22 and 330.10

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Solution

The fourth proportional to 1,110.32, 1,665.22 and 330.10 is: 495.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.32 : 1,665.22 = 330.10 : x
  2. Step 2: Convert to fraction form
    1,110.32/1,665.22 = 330.10/x
  3. Step 3: Cross multiply
    1,110.32x = 1,665.22 × 330.10
  4. Step 4: Simplify right side
    1,110.32x = 549,689.12
  5. Step 5: Solve for x
    x = 549,689.12/1,110.32
  6. Step 6: Final answer
    x = 495.07

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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.