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Finding the Fourth Proportional to 602.38, 831.28 and 340.41

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Solution

The fourth proportional to 602.38, 831.28 and 340.41 is: 469.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.38 : 831.28 = 340.41 : x
  2. Step 2: Convert to fraction form
    602.38/831.28 = 340.41/x
  3. Step 3: Cross multiply
    602.38x = 831.28 × 340.41
  4. Step 4: Simplify right side
    602.38x = 282,976.02
  5. Step 5: Solve for x
    x = 282,976.02/602.38
  6. Step 6: Final answer
    x = 469.77

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1.5x scale

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.