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Finding the Fourth Proportional to 547.32, 751.26 and 486.99

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Solution

The fourth proportional to 547.32, 751.26 and 486.99 is: 668.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.32 : 751.26 = 486.99 : x
  2. Step 2: Convert to fraction form
    547.32/751.26 = 486.99/x
  3. Step 3: Cross multiply
    547.32x = 751.26 × 486.99
  4. Step 4: Simplify right side
    547.32x = 365,857.93
  5. Step 5: Solve for x
    x = 365,857.93/547.32
  6. Step 6: Final answer
    x = 668.45

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.