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Finding the Fourth Proportional to 682.02, 938.52 and 619.92

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Solution

The fourth proportional to 682.02, 938.52 and 619.92 is: 853.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.02 : 938.52 = 619.92 : x
  2. Step 2: Convert to fraction form
    682.02/938.52 = 619.92/x
  3. Step 3: Cross multiply
    682.02x = 938.52 × 619.92
  4. Step 4: Simplify right side
    682.02x = 581,807.32
  5. Step 5: Solve for x
    x = 581,807.32/682.02
  6. Step 6: Final answer
    x = 853.06

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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.