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Finding the Fourth Proportional to 1,048.95, 1,447.52 and 606.78

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Solution

The fourth proportional to 1,048.95, 1,447.52 and 606.78 is: 837.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048.95 : 1,447.52 = 606.78 : x
  2. Step 2: Convert to fraction form
    1,048.95/1,447.52 = 606.78/x
  3. Step 3: Cross multiply
    1,048.95x = 1,447.52 × 606.78
  4. Step 4: Simplify right side
    1,048.95x = 878,323.15
  5. Step 5: Solve for x
    x = 878,323.15/1,048.95
  6. Step 6: Final answer
    x = 837.34

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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.