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Finding the Fourth Proportional to 1,025.43, 1,538.18 and 295.08

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Solution

The fourth proportional to 1,025.43, 1,538.18 and 295.08 is: 442.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,025.43 : 1,538.18 = 295.08 : x
  2. Step 2: Convert to fraction form
    1,025.43/1,538.18 = 295.08/x
  3. Step 3: Cross multiply
    1,025.43x = 1,538.18 × 295.08
  4. Step 4: Simplify right side
    1,025.43x = 453,886.15
  5. Step 5: Solve for x
    x = 453,886.15/1,025.43
  6. Step 6: Final answer
    x = 442.63

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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.