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Finding the Fourth Proportional to 1,649.16, 2,275.56 and 940.95

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Solution

The fourth proportional to 1,649.16, 2,275.56 and 940.95 is: 1,298.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,649.16 : 2,275.56 = 940.95 : x
  2. Step 2: Convert to fraction form
    1,649.16/2,275.56 = 940.95/x
  3. Step 3: Cross multiply
    1,649.16x = 2,275.56 × 940.95
  4. Step 4: Simplify right side
    1,649.16x = 2,141,188.18
  5. Step 5: Solve for x
    x = 2,141,188.18/1,649.16
  6. Step 6: Final answer
    x = 1,298.35

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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.