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Finding the Fourth Proportional to 670.28, 1,004.58 and 362.12

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Solution

The fourth proportional to 670.28, 1,004.58 and 362.12 is: 542.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.28 : 1,004.58 = 362.12 : x
  2. Step 2: Convert to fraction form
    670.28/1,004.58 = 362.12/x
  3. Step 3: Cross multiply
    670.28x = 1,004.58 × 362.12
  4. Step 4: Simplify right side
    670.28x = 363,778.51
  5. Step 5: Solve for x
    x = 363,778.51/670.28
  6. Step 6: Final answer
    x = 542.73

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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.