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Finding the Fourth Proportional to 670.44, 925.28 and 375.72

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Solution

The fourth proportional to 670.44, 925.28 and 375.72 is: 518.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.44 : 925.28 = 375.72 : x
  2. Step 2: Convert to fraction form
    670.44/925.28 = 375.72/x
  3. Step 3: Cross multiply
    670.44x = 925.28 × 375.72
  4. Step 4: Simplify right side
    670.44x = 347,646.20
  5. Step 5: Solve for x
    x = 347,646.20/670.44
  6. Step 6: Final answer
    x = 518.53

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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.