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Finding the Fourth Proportional to 631.44, 866.58 and 615.12

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Solution

The fourth proportional to 631.44, 866.58 and 615.12 is: 844.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.44 : 866.58 = 615.12 : x
  2. Step 2: Convert to fraction form
    631.44/866.58 = 615.12/x
  3. Step 3: Cross multiply
    631.44x = 866.58 × 615.12
  4. Step 4: Simplify right side
    631.44x = 533,050.69
  5. Step 5: Solve for x
    x = 533,050.69/631.44
  6. Step 6: Final answer
    x = 844.18

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.