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Finding the Fourth Proportional to 618.32, 852.18 and 452.28

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Solution

The fourth proportional to 618.32, 852.18 and 452.28 is: 623.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.32 : 852.18 = 452.28 : x
  2. Step 2: Convert to fraction form
    618.32/852.18 = 452.28/x
  3. Step 3: Cross multiply
    618.32x = 852.18 × 452.28
  4. Step 4: Simplify right side
    618.32x = 385,423.97
  5. Step 5: Solve for x
    x = 385,423.97/618.32
  6. Step 6: Final answer
    x = 623.34

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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.