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Finding the Fourth Proportional to 505.22, 758.98 and 436.03

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Solution

The fourth proportional to 505.22, 758.98 and 436.03 is: 655.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.22 : 758.98 = 436.03 : x
  2. Step 2: Convert to fraction form
    505.22/758.98 = 436.03/x
  3. Step 3: Cross multiply
    505.22x = 758.98 × 436.03
  4. Step 4: Simplify right side
    505.22x = 330,937.92
  5. Step 5: Solve for x
    x = 330,937.92/505.22
  6. Step 6: Final answer
    x = 655.03

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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.