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Finding the Fourth Proportional to 1,015.66, 1,524.09 and 553.44

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Solution

The fourth proportional to 1,015.66, 1,524.09 and 553.44 is: 830.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015.66 : 1,524.09 = 553.44 : x
  2. Step 2: Convert to fraction form
    1,015.66/1,524.09 = 553.44/x
  3. Step 3: Cross multiply
    1,015.66x = 1,524.09 × 553.44
  4. Step 4: Simplify right side
    1,015.66x = 843,492.37
  5. Step 5: Solve for x
    x = 843,492.37/1,015.66
  6. Step 6: Final answer
    x = 830.49

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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.