Home / 1,110.32-1,665.35-288.66

Finding the Fourth Proportional to 1,110.32, 1,665.35 and 288.66

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Solution

The fourth proportional to 1,110.32, 1,665.35 and 288.66 is: 432.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.32 : 1,665.35 = 288.66 : x
  2. Step 2: Convert to fraction form
    1,110.32/1,665.35 = 288.66/x
  3. Step 3: Cross multiply
    1,110.32x = 1,665.35 × 288.66
  4. Step 4: Simplify right side
    1,110.32x = 480,718.49
  5. Step 5: Solve for x
    x = 480,718.49/1,110.32
  6. Step 6: Final answer
    x = 432.96

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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.