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Finding the Fourth Proportional to 546.23, 753.80 and 380.54

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Solution

The fourth proportional to 546.23, 753.80 and 380.54 is: 525.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.23 : 753.80 = 380.54 : x
  2. Step 2: Convert to fraction form
    546.23/753.80 = 380.54/x
  3. Step 3: Cross multiply
    546.23x = 753.80 × 380.54
  4. Step 4: Simplify right side
    546.23x = 286,848.21
  5. Step 5: Solve for x
    x = 286,848.21/546.23
  6. Step 6: Final answer
    x = 525.14

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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.