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Finding the Fourth Proportional to 602.43, 831.29 and 340.39

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Solution

The fourth proportional to 602.43, 831.29 and 340.39 is: 469.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.43 : 831.29 = 340.39 : x
  2. Step 2: Convert to fraction form
    602.43/831.29 = 340.39/x
  3. Step 3: Cross multiply
    602.43x = 831.29 × 340.39
  4. Step 4: Simplify right side
    602.43x = 282,962.80
  5. Step 5: Solve for x
    x = 282,962.80/602.43
  6. Step 6: Final answer
    x = 469.70

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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.