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Finding the Fourth Proportional to 540.53, 745.42 and 354.18

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Solution

The fourth proportional to 540.53, 745.42 and 354.18 is: 488.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.53 : 745.42 = 354.18 : x
  2. Step 2: Convert to fraction form
    540.53/745.42 = 354.18/x
  3. Step 3: Cross multiply
    540.53x = 745.42 × 354.18
  4. Step 4: Simplify right side
    540.53x = 264,011.24
  5. Step 5: Solve for x
    x = 264,011.24/540.53
  6. Step 6: Final answer
    x = 488.43

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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.