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Finding the Fourth Proportional to 1,048.43, 1,445.28 and 675.34

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Solution

The fourth proportional to 1,048.43, 1,445.28 and 675.34 is: 930.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048.43 : 1,445.28 = 675.34 : x
  2. Step 2: Convert to fraction form
    1,048.43/1,445.28 = 675.34/x
  3. Step 3: Cross multiply
    1,048.43x = 1,445.28 × 675.34
  4. Step 4: Simplify right side
    1,048.43x = 976,049.25
  5. Step 5: Solve for x
    x = 976,049.25/1,048.43
  6. Step 6: Final answer
    x = 930.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.