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Finding the Fourth Proportional to 514.42, 707.72 and 475.26

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Solution

The fourth proportional to 514.42, 707.72 and 475.26 is: 653.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.42 : 707.72 = 475.26 : x
  2. Step 2: Convert to fraction form
    514.42/707.72 = 475.26/x
  3. Step 3: Cross multiply
    514.42x = 707.72 × 475.26
  4. Step 4: Simplify right side
    514.42x = 336,351.01
  5. Step 5: Solve for x
    x = 336,351.01/514.42
  6. Step 6: Final answer
    x = 653.85

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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.