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Finding the Fourth Proportional to 844.53, 1,265.76 and 479.63

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Solution

The fourth proportional to 844.53, 1,265.76 and 479.63 is: 718.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.53 : 1,265.76 = 479.63 : x
  2. Step 2: Convert to fraction form
    844.53/1,265.76 = 479.63/x
  3. Step 3: Cross multiply
    844.53x = 1,265.76 × 479.63
  4. Step 4: Simplify right side
    844.53x = 607,090.14
  5. Step 5: Solve for x
    x = 607,090.14/844.53
  6. Step 6: Final answer
    x = 718.85

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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.