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Finding the Fourth Proportional to 756.60, 1,044.15 and 476.73

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Solution

The fourth proportional to 756.60, 1,044.15 and 476.73 is: 657.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.60 : 1,044.15 = 476.73 : x
  2. Step 2: Convert to fraction form
    756.60/1,044.15 = 476.73/x
  3. Step 3: Cross multiply
    756.60x = 1,044.15 × 476.73
  4. Step 4: Simplify right side
    756.60x = 497,777.63
  5. Step 5: Solve for x
    x = 497,777.63/756.60
  6. Step 6: Final answer
    x = 657.91

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Double scale
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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.