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Finding the Fourth Proportional to 923.11, 1,273.89 and 524.72

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Solution

The fourth proportional to 923.11, 1,273.89 and 524.72 is: 724.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    923.11 : 1,273.89 = 524.72 : x
  2. Step 2: Convert to fraction form
    923.11/1,273.89 = 524.72/x
  3. Step 3: Cross multiply
    923.11x = 1,273.89 × 524.72
  4. Step 4: Simplify right side
    923.11x = 668,440.71
  5. Step 5: Solve for x
    x = 668,440.71/923.11
  6. Step 6: Final answer
    x = 724.12

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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.