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Finding the Fourth Proportional to 571.51, 861.15 and 471.04

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Solution

The fourth proportional to 571.51, 861.15 and 471.04 is: 709.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.51 : 861.15 = 471.04 : x
  2. Step 2: Convert to fraction form
    571.51/861.15 = 471.04/x
  3. Step 3: Cross multiply
    571.51x = 861.15 × 471.04
  4. Step 4: Simplify right side
    571.51x = 405,636.10
  5. Step 5: Solve for x
    x = 405,636.10/571.51
  6. Step 6: Final answer
    x = 709.76

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.