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Finding the Fourth Proportional to 925.53, 1,388.57 and 276.27

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Solution

The fourth proportional to 925.53, 1,388.57 and 276.27 is: 414.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.53 : 1,388.57 = 276.27 : x
  2. Step 2: Convert to fraction form
    925.53/1,388.57 = 276.27/x
  3. Step 3: Cross multiply
    925.53x = 1,388.57 × 276.27
  4. Step 4: Simplify right side
    925.53x = 383,618.85
  5. Step 5: Solve for x
    x = 383,618.85/925.53
  6. Step 6: Final answer
    x = 414.49

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.