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Finding the Fourth Proportional to 902.95, 1,354.40 and 382.81

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Solution

The fourth proportional to 902.95, 1,354.40 and 382.81 is: 574.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.95 : 1,354.40 = 382.81 : x
  2. Step 2: Convert to fraction form
    902.95/1,354.40 = 382.81/x
  3. Step 3: Cross multiply
    902.95x = 1,354.40 × 382.81
  4. Step 4: Simplify right side
    902.95x = 518,478.69
  5. Step 5: Solve for x
    x = 518,478.69/902.95
  6. Step 6: Final answer
    x = 574.21

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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.