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Finding the Fourth Proportional to 602.68, 831.60 and 340.64

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Solution

The fourth proportional to 602.68, 831.60 and 340.64 is: 470.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.68 : 831.60 = 340.64 : x
  2. Step 2: Convert to fraction form
    602.68/831.60 = 340.64/x
  3. Step 3: Cross multiply
    602.68x = 831.60 × 340.64
  4. Step 4: Simplify right side
    602.68x = 283,276.22
  5. Step 5: Solve for x
    x = 283,276.22/602.68
  6. Step 6: Final answer
    x = 470.03

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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.