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Finding the Fourth Proportional to 923.67, 1,274.87 and 550.87

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Solution

The fourth proportional to 923.67, 1,274.87 and 550.87 is: 760.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    923.67 : 1,274.87 = 550.87 : x
  2. Step 2: Convert to fraction form
    923.67/1,274.87 = 550.87/x
  3. Step 3: Cross multiply
    923.67x = 1,274.87 × 550.87
  4. Step 4: Simplify right side
    923.67x = 702,285.83
  5. Step 5: Solve for x
    x = 702,285.83/923.67
  6. Step 6: Final answer
    x = 760.32

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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.