Home / 1,143.02-1,577.37-677.30

Finding the Fourth Proportional to 1,143.02, 1,577.37 and 677.30

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Solution

The fourth proportional to 1,143.02, 1,577.37 and 677.30 is: 934.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143.02 : 1,577.37 = 677.30 : x
  2. Step 2: Convert to fraction form
    1,143.02/1,577.37 = 677.30/x
  3. Step 3: Cross multiply
    1,143.02x = 1,577.37 × 677.30
  4. Step 4: Simplify right side
    1,143.02x = 1,068,352.70
  5. Step 5: Solve for x
    x = 1,068,352.70/1,143.02
  6. Step 6: Final answer
    x = 934.68

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1.5x scale

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.