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Finding the Fourth Proportional to 571.19, 858.60 and 356.13

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Solution

The fourth proportional to 571.19, 858.60 and 356.13 is: 535.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.19 : 858.60 = 356.13 : x
  2. Step 2: Convert to fraction form
    571.19/858.60 = 356.13/x
  3. Step 3: Cross multiply
    571.19x = 858.60 × 356.13
  4. Step 4: Simplify right side
    571.19x = 305,773.22
  5. Step 5: Solve for x
    x = 305,773.22/571.19
  6. Step 6: Final answer
    x = 535.33

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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.