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Finding the Fourth Proportional to 297.61, 445.87 and 291.13

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Solution

The fourth proportional to 297.61, 445.87 and 291.13 is: 436.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.61 : 445.87 = 291.13 : x
  2. Step 2: Convert to fraction form
    297.61/445.87 = 291.13/x
  3. Step 3: Cross multiply
    297.61x = 445.87 × 291.13
  4. Step 4: Simplify right side
    297.61x = 129,805.38
  5. Step 5: Solve for x
    x = 129,805.38/297.61
  6. Step 6: Final answer
    x = 436.16

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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.