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Finding the Fourth Proportional to 925.02, 1,274.40 and 864.54

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Solution

The fourth proportional to 925.02, 1,274.40 and 864.54 is: 1,191.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.02 : 1,274.40 = 864.54 : x
  2. Step 2: Convert to fraction form
    925.02/1,274.40 = 864.54/x
  3. Step 3: Cross multiply
    925.02x = 1,274.40 × 864.54
  4. Step 4: Simplify right side
    925.02x = 1,101,769.78
  5. Step 5: Solve for x
    x = 1,101,769.78/925.02
  6. Step 6: Final answer
    x = 1,191.08

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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.