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Finding the Fourth Proportional to 460.31, 688.73 and 274.53

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Solution

The fourth proportional to 460.31, 688.73 and 274.53 is: 410.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.31 : 688.73 = 274.53 : x
  2. Step 2: Convert to fraction form
    460.31/688.73 = 274.53/x
  3. Step 3: Cross multiply
    460.31x = 688.73 × 274.53
  4. Step 4: Simplify right side
    460.31x = 189,077.05
  5. Step 5: Solve for x
    x = 189,077.05/460.31
  6. Step 6: Final answer
    x = 410.76

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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.