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Finding the Fourth Proportional to 716.11, 1,065.58 and 713.68

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Solution

The fourth proportional to 716.11, 1,065.58 and 713.68 is: 1,061.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.11 : 1,065.58 = 713.68 : x
  2. Step 2: Convert to fraction form
    716.11/1,065.58 = 713.68/x
  3. Step 3: Cross multiply
    716.11x = 1,065.58 × 713.68
  4. Step 4: Simplify right side
    716.11x = 760,477.81
  5. Step 5: Solve for x
    x = 760,477.81/716.11
  6. Step 6: Final answer
    x = 1,061.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.