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Finding the Fourth Proportional to 540.15, 750.40 and 535.08

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Solution

The fourth proportional to 540.15, 750.40 and 535.08 is: 743.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.15 : 750.40 = 535.08 : x
  2. Step 2: Convert to fraction form
    540.15/750.40 = 535.08/x
  3. Step 3: Cross multiply
    540.15x = 750.40 × 535.08
  4. Step 4: Simplify right side
    540.15x = 401,524.03
  5. Step 5: Solve for x
    x = 401,524.03/540.15
  6. Step 6: Final answer
    x = 743.36

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.