Home / 1,185.40-1,778.01-527.30

Finding the Fourth Proportional to 1,185.40, 1,778.01 and 527.30

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Solution

The fourth proportional to 1,185.40, 1,778.01 and 527.30 is: 790.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185.40 : 1,778.01 = 527.30 : x
  2. Step 2: Convert to fraction form
    1,185.40/1,778.01 = 527.30/x
  3. Step 3: Cross multiply
    1,185.40x = 1,778.01 × 527.30
  4. Step 4: Simplify right side
    1,185.40x = 937,539.97
  5. Step 5: Solve for x
    x = 937,539.97/1,185.40
  6. Step 6: Final answer
    x = 790.91

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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.