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Finding the Fourth Proportional to 546.21, 753.64 and 310.11

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Solution

The fourth proportional to 546.21, 753.64 and 310.11 is: 427.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.21 : 753.64 = 310.11 : x
  2. Step 2: Convert to fraction form
    546.21/753.64 = 310.11/x
  3. Step 3: Cross multiply
    546.21x = 753.64 × 310.11
  4. Step 4: Simplify right side
    546.21x = 233,708.86
  5. Step 5: Solve for x
    x = 233,708.86/546.21
  6. Step 6: Final answer
    x = 427.87

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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.