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Finding the Fourth Proportional to 923.37, 1,274.21 and 503.72

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Solution

The fourth proportional to 923.37, 1,274.21 and 503.72 is: 695.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    923.37 : 1,274.21 = 503.72 : x
  2. Step 2: Convert to fraction form
    923.37/1,274.21 = 503.72/x
  3. Step 3: Cross multiply
    923.37x = 1,274.21 × 503.72
  4. Step 4: Simplify right side
    923.37x = 641,838.69
  5. Step 5: Solve for x
    x = 641,838.69/923.37
  6. Step 6: Final answer
    x = 695.11

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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.