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Finding the Fourth Proportional to 760.93, 1,141.39 and 274.02

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Solution

The fourth proportional to 760.93, 1,141.39 and 274.02 is: 411.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    760.93 : 1,141.39 = 274.02 : x
  2. Step 2: Convert to fraction form
    760.93/1,141.39 = 274.02/x
  3. Step 3: Cross multiply
    760.93x = 1,141.39 × 274.02
  4. Step 4: Simplify right side
    760.93x = 312,757.30
  5. Step 5: Solve for x
    x = 312,757.30/760.93
  6. Step 6: Final answer
    x = 411.02

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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.