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Finding the Fourth Proportional to 713.51, 1,068.17 and 576.81

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Solution

The fourth proportional to 713.51, 1,068.17 and 576.81 is: 863.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.51 : 1,068.17 = 576.81 : x
  2. Step 2: Convert to fraction form
    713.51/1,068.17 = 576.81/x
  3. Step 3: Cross multiply
    713.51x = 1,068.17 × 576.81
  4. Step 4: Simplify right side
    713.51x = 616,128.25
  5. Step 5: Solve for x
    x = 616,128.25/713.51
  6. Step 6: Final answer
    x = 863.52

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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.