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Finding the Fourth Proportional to 433.27, 646.96 and 340.93

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Solution

The fourth proportional to 433.27, 646.96 and 340.93 is: 509.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.27 : 646.96 = 340.93 : x
  2. Step 2: Convert to fraction form
    433.27/646.96 = 340.93/x
  3. Step 3: Cross multiply
    433.27x = 646.96 × 340.93
  4. Step 4: Simplify right side
    433.27x = 220,568.07
  5. Step 5: Solve for x
    x = 220,568.07/433.27
  6. Step 6: Final answer
    x = 509.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.