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Finding the Fourth Proportional to 540.67, 811.28 and 297.13

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Solution

The fourth proportional to 540.67, 811.28 and 297.13 is: 445.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.67 : 811.28 = 297.13 : x
  2. Step 2: Convert to fraction form
    540.67/811.28 = 297.13/x
  3. Step 3: Cross multiply
    540.67x = 811.28 × 297.13
  4. Step 4: Simplify right side
    540.67x = 241,055.63
  5. Step 5: Solve for x
    x = 241,055.63/540.67
  6. Step 6: Final answer
    x = 445.85

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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.