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Finding the Fourth Proportional to 501.20, 693.96 and 475.60

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Solution

The fourth proportional to 501.20, 693.96 and 475.60 is: 658.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.20 : 693.96 = 475.60 : x
  2. Step 2: Convert to fraction form
    501.20/693.96 = 475.60/x
  3. Step 3: Cross multiply
    501.20x = 693.96 × 475.60
  4. Step 4: Simplify right side
    501.20x = 330,047.38
  5. Step 5: Solve for x
    x = 330,047.38/501.20
  6. Step 6: Final answer
    x = 658.51

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1.5x scale

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.