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Finding the Fourth Proportional to 571.64, 862.16 and 553.16

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Solution

The fourth proportional to 571.64, 862.16 and 553.16 is: 834.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.64 : 862.16 = 553.16 : x
  2. Step 2: Convert to fraction form
    571.64/862.16 = 553.16/x
  3. Step 3: Cross multiply
    571.64x = 862.16 × 553.16
  4. Step 4: Simplify right side
    571.64x = 476,911.82
  5. Step 5: Solve for x
    x = 476,911.82/571.64
  6. Step 6: Final answer
    x = 834.29

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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.