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Finding the Fourth Proportional to 542.84, 814.46 and 299.30

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Solution

The fourth proportional to 542.84, 814.46 and 299.30 is: 449.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.84 : 814.46 = 299.30 : x
  2. Step 2: Convert to fraction form
    542.84/814.46 = 299.30/x
  3. Step 3: Cross multiply
    542.84x = 814.46 × 299.30
  4. Step 4: Simplify right side
    542.84x = 243,762.31
  5. Step 5: Solve for x
    x = 243,762.31/542.84
  6. Step 6: Final answer
    x = 449.05

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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.