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Finding the Fourth Proportional to 571.55, 857.35 and 354.67

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Solution

The fourth proportional to 571.55, 857.35 and 354.67 is: 532.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.55 : 857.35 = 354.67 : x
  2. Step 2: Convert to fraction form
    571.55/857.35 = 354.67/x
  3. Step 3: Cross multiply
    571.55x = 857.35 × 354.67
  4. Step 4: Simplify right side
    571.55x = 304,074.62
  5. Step 5: Solve for x
    x = 304,074.62/571.55
  6. Step 6: Final answer
    x = 532.02

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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.