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Finding the Fourth Proportional to 607.75, 907.03 and 549.43

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Solution

The fourth proportional to 607.75, 907.03 and 549.43 is: 819.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.75 : 907.03 = 549.43 : x
  2. Step 2: Convert to fraction form
    607.75/907.03 = 549.43/x
  3. Step 3: Cross multiply
    607.75x = 907.03 × 549.43
  4. Step 4: Simplify right side
    607.75x = 498,349.49
  5. Step 5: Solve for x
    x = 498,349.49/607.75
  6. Step 6: Final answer
    x = 819.99

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.