Home / 760.03-1,139.37-272.74

Finding the Fourth Proportional to 760.03, 1,139.37 and 272.74

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Solution

The fourth proportional to 760.03, 1,139.37 and 272.74 is: 408.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    760.03 : 1,139.37 = 272.74 : x
  2. Step 2: Convert to fraction form
    760.03/1,139.37 = 272.74/x
  3. Step 3: Cross multiply
    760.03x = 1,139.37 × 272.74
  4. Step 4: Simplify right side
    760.03x = 310,753.24
  5. Step 5: Solve for x
    x = 310,753.24/760.03
  6. Step 6: Final answer
    x = 408.87

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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.