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Finding the Fourth Proportional to 713.57, 1,070.35 and 200.57

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Solution

The fourth proportional to 713.57, 1,070.35 and 200.57 is: 300.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.57 : 1,070.35 = 200.57 : x
  2. Step 2: Convert to fraction form
    713.57/1,070.35 = 200.57/x
  3. Step 3: Cross multiply
    713.57x = 1,070.35 × 200.57
  4. Step 4: Simplify right side
    713.57x = 214,674.75
  5. Step 5: Solve for x
    x = 214,674.75/713.57
  6. Step 6: Final answer
    x = 300.85

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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.