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Finding the Fourth Proportional to 602.96, 831.84 and 403.70

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Solution

The fourth proportional to 602.96, 831.84 and 403.70 is: 556.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.96 : 831.84 = 403.70 : x
  2. Step 2: Convert to fraction form
    602.96/831.84 = 403.70/x
  3. Step 3: Cross multiply
    602.96x = 831.84 × 403.70
  4. Step 4: Simplify right side
    602.96x = 335,813.81
  5. Step 5: Solve for x
    x = 335,813.81/602.96
  6. Step 6: Final answer
    x = 556.94

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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.