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Finding the Fourth Proportional to 850.70, 1,174.02 and 556.76

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Solution

The fourth proportional to 850.70, 1,174.02 and 556.76 is: 768.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.70 : 1,174.02 = 556.76 : x
  2. Step 2: Convert to fraction form
    850.70/1,174.02 = 556.76/x
  3. Step 3: Cross multiply
    850.70x = 1,174.02 × 556.76
  4. Step 4: Simplify right side
    850.70x = 653,647.38
  5. Step 5: Solve for x
    x = 653,647.38/850.70
  6. Step 6: Final answer
    x = 768.36

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Double scale
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1.5x scale

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.