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Finding the Fourth Proportional to 546.04, 753.15 and 398.72

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Solution

The fourth proportional to 546.04, 753.15 and 398.72 is: 549.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.04 : 753.15 = 398.72 : x
  2. Step 2: Convert to fraction form
    546.04/753.15 = 398.72/x
  3. Step 3: Cross multiply
    546.04x = 753.15 × 398.72
  4. Step 4: Simplify right side
    546.04x = 300,297.10
  5. Step 5: Solve for x
    x = 300,297.10/546.04
  6. Step 6: Final answer
    x = 549.95

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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.