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Finding the Fourth Proportional to 509.04, 701.46 and 477.72

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Solution

The fourth proportional to 509.04, 701.46 and 477.72 is: 658.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    509.04 : 701.46 = 477.72 : x
  2. Step 2: Convert to fraction form
    509.04/701.46 = 477.72/x
  3. Step 3: Cross multiply
    509.04x = 701.46 × 477.72
  4. Step 4: Simplify right side
    509.04x = 335,101.47
  5. Step 5: Solve for x
    x = 335,101.47/509.04
  6. Step 6: Final answer
    x = 658.30

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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.