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Finding the Fourth Proportional to 677.25, 934.29 and 480.87

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Solution

The fourth proportional to 677.25, 934.29 and 480.87 is: 663.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.25 : 934.29 = 480.87 : x
  2. Step 2: Convert to fraction form
    677.25/934.29 = 480.87/x
  3. Step 3: Cross multiply
    677.25x = 934.29 × 480.87
  4. Step 4: Simplify right side
    677.25x = 449,272.03
  5. Step 5: Solve for x
    x = 449,272.03/677.25
  6. Step 6: Final answer
    x = 663.38

Related Problems

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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.