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Finding the Fourth Proportional to 894.81, 1,342.20 and 245.55

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Solution

The fourth proportional to 894.81, 1,342.20 and 245.55 is: 368.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.81 : 1,342.20 = 245.55 : x
  2. Step 2: Convert to fraction form
    894.81/1,342.20 = 245.55/x
  3. Step 3: Cross multiply
    894.81x = 1,342.20 × 245.55
  4. Step 4: Simplify right side
    894.81x = 329,577.21
  5. Step 5: Solve for x
    x = 329,577.21/894.81
  6. Step 6: Final answer
    x = 368.32

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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.