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Finding the Fourth Proportional to 571.36, 852.86 and 490.72

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Solution

The fourth proportional to 571.36, 852.86 and 490.72 is: 732.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.36 : 852.86 = 490.72 : x
  2. Step 2: Convert to fraction form
    571.36/852.86 = 490.72/x
  3. Step 3: Cross multiply
    571.36x = 852.86 × 490.72
  4. Step 4: Simplify right side
    571.36x = 418,515.46
  5. Step 5: Solve for x
    x = 418,515.46/571.36
  6. Step 6: Final answer
    x = 732.49

Related Problems

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