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Finding the Fourth Proportional to 540.63, 745.31 and 457.41

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Solution

The fourth proportional to 540.63, 745.31 and 457.41 is: 630.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.63 : 745.31 = 457.41 : x
  2. Step 2: Convert to fraction form
    540.63/745.31 = 457.41/x
  3. Step 3: Cross multiply
    540.63x = 745.31 × 457.41
  4. Step 4: Simplify right side
    540.63x = 340,909.66
  5. Step 5: Solve for x
    x = 340,909.66/540.63
  6. Step 6: Final answer
    x = 630.58

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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.