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Finding the Fourth Proportional to 601.68, 830.16 and 339.66

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Solution

The fourth proportional to 601.68, 830.16 and 339.66 is: 468.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    601.68 : 830.16 = 339.66 : x
  2. Step 2: Convert to fraction form
    601.68/830.16 = 339.66/x
  3. Step 3: Cross multiply
    601.68x = 830.16 × 339.66
  4. Step 4: Simplify right side
    601.68x = 281,972.15
  5. Step 5: Solve for x
    x = 281,972.15/601.68
  6. Step 6: Final answer
    x = 468.64

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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.