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Finding the Fourth Proportional to 433.48, 652.02 and 393.40

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Solution

The fourth proportional to 433.48, 652.02 and 393.40 is: 591.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.48 : 652.02 = 393.40 : x
  2. Step 2: Convert to fraction form
    433.48/652.02 = 393.40/x
  3. Step 3: Cross multiply
    433.48x = 652.02 × 393.40
  4. Step 4: Simplify right side
    433.48x = 256,504.67
  5. Step 5: Solve for x
    x = 256,504.67/433.48
  6. Step 6: Final answer
    x = 591.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.