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Finding the Fourth Proportional to 713.16, 983.38 and 619.10

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Solution

The fourth proportional to 713.16, 983.38 and 619.10 is: 853.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.16 : 983.38 = 619.10 : x
  2. Step 2: Convert to fraction form
    713.16/983.38 = 619.10/x
  3. Step 3: Cross multiply
    713.16x = 983.38 × 619.10
  4. Step 4: Simplify right side
    713.16x = 608,805.64
  5. Step 5: Solve for x
    x = 608,805.64/713.16
  6. Step 6: Final answer
    x = 853.68

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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.