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Finding the Fourth Proportional to 547.12, 818.55 and 501.15

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Solution

The fourth proportional to 547.12, 818.55 and 501.15 is: 749.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.12 : 818.55 = 501.15 : x
  2. Step 2: Convert to fraction form
    547.12/818.55 = 501.15/x
  3. Step 3: Cross multiply
    547.12x = 818.55 × 501.15
  4. Step 4: Simplify right side
    547.12x = 410,216.33
  5. Step 5: Solve for x
    x = 410,216.33/547.12
  6. Step 6: Final answer
    x = 749.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.