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Finding the Fourth Proportional to 578.06, 867.06 and 253.43

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Solution

The fourth proportional to 578.06, 867.06 and 253.43 is: 380.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.06 : 867.06 = 253.43 : x
  2. Step 2: Convert to fraction form
    578.06/867.06 = 253.43/x
  3. Step 3: Cross multiply
    578.06x = 867.06 × 253.43
  4. Step 4: Simplify right side
    578.06x = 219,735.31
  5. Step 5: Solve for x
    x = 219,735.31/578.06
  6. Step 6: Final answer
    x = 380.13

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Double scale
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Similar ratio
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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.