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Finding the Fourth Proportional to 571.99, 790.08 and 425.28

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Solution

The fourth proportional to 571.99, 790.08 and 425.28 is: 587.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.99 : 790.08 = 425.28 : x
  2. Step 2: Convert to fraction form
    571.99/790.08 = 425.28/x
  3. Step 3: Cross multiply
    571.99x = 790.08 × 425.28
  4. Step 4: Simplify right side
    571.99x = 336,005.22
  5. Step 5: Solve for x
    x = 336,005.22/571.99
  6. Step 6: Final answer
    x = 587.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.