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Finding the Fourth Proportional to 684.48, 1,026.37 and 267.76

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Solution

The fourth proportional to 684.48, 1,026.37 and 267.76 is: 401.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.48 : 1,026.37 = 267.76 : x
  2. Step 2: Convert to fraction form
    684.48/1,026.37 = 267.76/x
  3. Step 3: Cross multiply
    684.48x = 1,026.37 × 267.76
  4. Step 4: Simplify right side
    684.48x = 274,820.83
  5. Step 5: Solve for x
    x = 274,820.83/684.48
  6. Step 6: Final answer
    x = 401.50

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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.