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Finding the Fourth Proportional to 923.88, 1,274.36 and 658.29

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Solution

The fourth proportional to 923.88, 1,274.36 and 658.29 is: 908.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    923.88 : 1,274.36 = 658.29 : x
  2. Step 2: Convert to fraction form
    923.88/1,274.36 = 658.29/x
  3. Step 3: Cross multiply
    923.88x = 1,274.36 × 658.29
  4. Step 4: Simplify right side
    923.88x = 838,895.15
  5. Step 5: Solve for x
    x = 838,895.15/923.88
  6. Step 6: Final answer
    x = 908.01

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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.