Home / 1,119.30-1,544.40-653.55

Finding the Fourth Proportional to 1,119.30, 1,544.40 and 653.55

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Solution

The fourth proportional to 1,119.30, 1,544.40 and 653.55 is: 901.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.30 : 1,544.40 = 653.55 : x
  2. Step 2: Convert to fraction form
    1,119.30/1,544.40 = 653.55/x
  3. Step 3: Cross multiply
    1,119.30x = 1,544.40 × 653.55
  4. Step 4: Simplify right side
    1,119.30x = 1,009,342.62
  5. Step 5: Solve for x
    x = 1,009,342.62/1,119.30
  6. Step 6: Final answer
    x = 901.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.