Home / 1,140.28-1,710.23-370.78

Finding the Fourth Proportional to 1,140.28, 1,710.23 and 370.78

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Solution

The fourth proportional to 1,140.28, 1,710.23 and 370.78 is: 556.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140.28 : 1,710.23 = 370.78 : x
  2. Step 2: Convert to fraction form
    1,140.28/1,710.23 = 370.78/x
  3. Step 3: Cross multiply
    1,140.28x = 1,710.23 × 370.78
  4. Step 4: Simplify right side
    1,140.28x = 634,112.95
  5. Step 5: Solve for x
    x = 634,112.95/1,140.28
  6. Step 6: Final answer
    x = 556.10

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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.