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Finding the Fourth Proportional to 602.63, 831.63 and 340.64

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Solution

The fourth proportional to 602.63, 831.63 and 340.64 is: 470.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.63 : 831.63 = 340.64 : x
  2. Step 2: Convert to fraction form
    602.63/831.63 = 340.64/x
  3. Step 3: Cross multiply
    602.63x = 831.63 × 340.64
  4. Step 4: Simplify right side
    602.63x = 283,282.29
  5. Step 5: Solve for x
    x = 283,282.29/602.63
  6. Step 6: Final answer
    x = 470.08

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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.