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Finding the Fourth Proportional to 955.45, 1,316.10 and 675.19

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Solution

The fourth proportional to 955.45, 1,316.10 and 675.19 is: 930.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.45 : 1,316.10 = 675.19 : x
  2. Step 2: Convert to fraction form
    955.45/1,316.10 = 675.19/x
  3. Step 3: Cross multiply
    955.45x = 1,316.10 × 675.19
  4. Step 4: Simplify right side
    955.45x = 888,617.56
  5. Step 5: Solve for x
    x = 888,617.56/955.45
  6. Step 6: Final answer
    x = 930.05

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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.