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Finding the Fourth Proportional to 943.70, 1,302.47 and 550.94

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Solution

The fourth proportional to 943.70, 1,302.47 and 550.94 is: 760.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    943.70 : 1,302.47 = 550.94 : x
  2. Step 2: Convert to fraction form
    943.70/1,302.47 = 550.94/x
  3. Step 3: Cross multiply
    943.70x = 1,302.47 × 550.94
  4. Step 4: Simplify right side
    943.70x = 717,573.55
  5. Step 5: Solve for x
    x = 717,573.55/943.70
  6. Step 6: Final answer
    x = 760.39

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Double scale
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1.5x scale

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.