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Finding the Fourth Proportional to 571.32, 857.18 and 293.90

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Solution

The fourth proportional to 571.32, 857.18 and 293.90 is: 440.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.32 : 857.18 = 293.90 : x
  2. Step 2: Convert to fraction form
    571.32/857.18 = 293.90/x
  3. Step 3: Cross multiply
    571.32x = 857.18 × 293.90
  4. Step 4: Simplify right side
    571.32x = 251,921.65
  5. Step 5: Solve for x
    x = 251,921.65/571.32
  6. Step 6: Final answer
    x = 440.95

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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.