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Finding the Fourth Proportional to 670.25, 925.17 and 443.14

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Solution

The fourth proportional to 670.25, 925.17 and 443.14 is: 611.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.25 : 925.17 = 443.14 : x
  2. Step 2: Convert to fraction form
    670.25/925.17 = 443.14/x
  3. Step 3: Cross multiply
    670.25x = 925.17 × 443.14
  4. Step 4: Simplify right side
    670.25x = 409,975.21
  5. Step 5: Solve for x
    x = 409,975.21/670.25
  6. Step 6: Final answer
    x = 611.68

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Half scale
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Double scale
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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.