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Finding the Fourth Proportional to 713.40, 984.36 and 602.64

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Solution

The fourth proportional to 713.40, 984.36 and 602.64 is: 831.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.40 : 984.36 = 602.64 : x
  2. Step 2: Convert to fraction form
    713.40/984.36 = 602.64/x
  3. Step 3: Cross multiply
    713.40x = 984.36 × 602.64
  4. Step 4: Simplify right side
    713.40x = 593,214.71
  5. Step 5: Solve for x
    x = 593,214.71/713.40
  6. Step 6: Final answer
    x = 831.53

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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.