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Finding the Fourth Proportional to 880.31, 1,318.58 and 571.26

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Solution

The fourth proportional to 880.31, 1,318.58 and 571.26 is: 855.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.31 : 1,318.58 = 571.26 : x
  2. Step 2: Convert to fraction form
    880.31/1,318.58 = 571.26/x
  3. Step 3: Cross multiply
    880.31x = 1,318.58 × 571.26
  4. Step 4: Simplify right side
    880.31x = 753,256.24
  5. Step 5: Solve for x
    x = 753,256.24/880.31
  6. Step 6: Final answer
    x = 855.67

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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.