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Finding the Fourth Proportional to 301.93, 450.56 and 291.40

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Solution

The fourth proportional to 301.93, 450.56 and 291.40 is: 434.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.93 : 450.56 = 291.40 : x
  2. Step 2: Convert to fraction form
    301.93/450.56 = 291.40/x
  3. Step 3: Cross multiply
    301.93x = 450.56 × 291.40
  4. Step 4: Simplify right side
    301.93x = 131,292.79
  5. Step 5: Solve for x
    x = 131,292.79/301.93
  6. Step 6: Final answer
    x = 434.85

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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.