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Finding the Fourth Proportional to 903.74, 1,354.57 and 382.97

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Solution

The fourth proportional to 903.74, 1,354.57 and 382.97 is: 574.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.74 : 1,354.57 = 382.97 : x
  2. Step 2: Convert to fraction form
    903.74/1,354.57 = 382.97/x
  3. Step 3: Cross multiply
    903.74x = 1,354.57 × 382.97
  4. Step 4: Simplify right side
    903.74x = 518,762.10
  5. Step 5: Solve for x
    x = 518,762.10/903.74
  6. Step 6: Final answer
    x = 574.02

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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.