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Finding the Fourth Proportional to 828.04, 1,242.06 and 462.28

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Solution

The fourth proportional to 828.04, 1,242.06 and 462.28 is: 693.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    828.04 : 1,242.06 = 462.28 : x
  2. Step 2: Convert to fraction form
    828.04/1,242.06 = 462.28/x
  3. Step 3: Cross multiply
    828.04x = 1,242.06 × 462.28
  4. Step 4: Simplify right side
    828.04x = 574,179.50
  5. Step 5: Solve for x
    x = 574,179.50/828.04
  6. Step 6: Final answer
    x = 693.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.