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Finding the Fourth Proportional to 571.84, 856.08 and 354.76

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Solution

The fourth proportional to 571.84, 856.08 and 354.76 is: 531.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.84 : 856.08 = 354.76 : x
  2. Step 2: Convert to fraction form
    571.84/856.08 = 354.76/x
  3. Step 3: Cross multiply
    571.84x = 856.08 × 354.76
  4. Step 4: Simplify right side
    571.84x = 303,702.94
  5. Step 5: Solve for x
    x = 303,702.94/571.84
  6. Step 6: Final answer
    x = 531.10

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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.