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Finding the Fourth Proportional to 575.49, 865.06 and 495.30

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Solution

The fourth proportional to 575.49, 865.06 and 495.30 is: 744.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.49 : 865.06 = 495.30 : x
  2. Step 2: Convert to fraction form
    575.49/865.06 = 495.30/x
  3. Step 3: Cross multiply
    575.49x = 865.06 × 495.30
  4. Step 4: Simplify right side
    575.49x = 428,462.98
  5. Step 5: Solve for x
    x = 428,462.98/575.49
  6. Step 6: Final answer
    x = 744.52

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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.