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Finding the Fourth Proportional to 670.38, 925.02 and 375.64

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Solution

The fourth proportional to 670.38, 925.02 and 375.64 is: 518.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.38 : 925.02 = 375.64 : x
  2. Step 2: Convert to fraction form
    670.38/925.02 = 375.64/x
  3. Step 3: Cross multiply
    670.38x = 925.02 × 375.64
  4. Step 4: Simplify right side
    670.38x = 347,474.51
  5. Step 5: Solve for x
    x = 347,474.51/670.38
  6. Step 6: Final answer
    x = 518.32

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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.