Home / 1,488.24-2,230.20-666.36

Finding the Fourth Proportional to 1,488.24, 2,230.20 and 666.36

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Solution

The fourth proportional to 1,488.24, 2,230.20 and 666.36 is: 998.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,488.24 : 2,230.20 = 666.36 : x
  2. Step 2: Convert to fraction form
    1,488.24/2,230.20 = 666.36/x
  3. Step 3: Cross multiply
    1,488.24x = 2,230.20 × 666.36
  4. Step 4: Simplify right side
    1,488.24x = 1,486,116.07
  5. Step 5: Solve for x
    x = 1,486,116.07/1,488.24
  6. Step 6: Final answer
    x = 998.57

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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.