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Finding the Fourth Proportional to 332.34, 457.68 and 290.89

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Solution

The fourth proportional to 332.34, 457.68 and 290.89 is: 400.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    332.34 : 457.68 = 290.89 : x
  2. Step 2: Convert to fraction form
    332.34/457.68 = 290.89/x
  3. Step 3: Cross multiply
    332.34x = 457.68 × 290.89
  4. Step 4: Simplify right side
    332.34x = 133,134.54
  5. Step 5: Solve for x
    x = 133,134.54/332.34
  6. Step 6: Final answer
    x = 400.60

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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.