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Finding the Fourth Proportional to 670.28, 925.08 and 484.37

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Solution

The fourth proportional to 670.28, 925.08 and 484.37 is: 668.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.28 : 925.08 = 484.37 : x
  2. Step 2: Convert to fraction form
    670.28/925.08 = 484.37/x
  3. Step 3: Cross multiply
    670.28x = 925.08 × 484.37
  4. Step 4: Simplify right side
    670.28x = 448,081.00
  5. Step 5: Solve for x
    x = 448,081.00/670.28
  6. Step 6: Final answer
    x = 668.50

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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.