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Finding the Fourth Proportional to 537.77, 742.29 and 313.78

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Solution

The fourth proportional to 537.77, 742.29 and 313.78 is: 433.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.77 : 742.29 = 313.78 : x
  2. Step 2: Convert to fraction form
    537.77/742.29 = 313.78/x
  3. Step 3: Cross multiply
    537.77x = 742.29 × 313.78
  4. Step 4: Simplify right side
    537.77x = 232,915.76
  5. Step 5: Solve for x
    x = 232,915.76/537.77
  6. Step 6: Final answer
    x = 433.11

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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.