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Finding the Fourth Proportional to 540.03, 745.94 and 487.55

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Solution

The fourth proportional to 540.03, 745.94 and 487.55 is: 673.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.03 : 745.94 = 487.55 : x
  2. Step 2: Convert to fraction form
    540.03/745.94 = 487.55/x
  3. Step 3: Cross multiply
    540.03x = 745.94 × 487.55
  4. Step 4: Simplify right side
    540.03x = 363,686.13
  5. Step 5: Solve for x
    x = 363,686.13/540.03
  6. Step 6: Final answer
    x = 673.45

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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.