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Finding the Fourth Proportional to 602.69, 831.72 and 340.71

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Solution

The fourth proportional to 602.69, 831.72 and 340.71 is: 470.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.69 : 831.72 = 340.71 : x
  2. Step 2: Convert to fraction form
    602.69/831.72 = 340.71/x
  3. Step 3: Cross multiply
    602.69x = 831.72 × 340.71
  4. Step 4: Simplify right side
    602.69x = 283,375.32
  5. Step 5: Solve for x
    x = 283,375.32/602.69
  6. Step 6: Final answer
    x = 470.18

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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.