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Finding the Fourth Proportional to 602.17, 831.08 and 340.21

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Solution

The fourth proportional to 602.17, 831.08 and 340.21 is: 469.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.17 : 831.08 = 340.21 : x
  2. Step 2: Convert to fraction form
    602.17/831.08 = 340.21/x
  3. Step 3: Cross multiply
    602.17x = 831.08 × 340.21
  4. Step 4: Simplify right side
    602.17x = 282,741.73
  5. Step 5: Solve for x
    x = 282,741.73/602.17
  6. Step 6: Final answer
    x = 469.54

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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.