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Finding the Fourth Proportional to 713.52, 981.72 and 620.01

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Solution

The fourth proportional to 713.52, 981.72 and 620.01 is: 853.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.52 : 981.72 = 620.01 : x
  2. Step 2: Convert to fraction form
    713.52/981.72 = 620.01/x
  3. Step 3: Cross multiply
    713.52x = 981.72 × 620.01
  4. Step 4: Simplify right side
    713.52x = 608,676.22
  5. Step 5: Solve for x
    x = 608,676.22/713.52
  6. Step 6: Final answer
    x = 853.06

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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.