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Finding the Fourth Proportional to 955.07, 1,316.45 and 674.86

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Solution

The fourth proportional to 955.07, 1,316.45 and 674.86 is: 930.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.07 : 1,316.45 = 674.86 : x
  2. Step 2: Convert to fraction form
    955.07/1,316.45 = 674.86/x
  3. Step 3: Cross multiply
    955.07x = 1,316.45 × 674.86
  4. Step 4: Simplify right side
    955.07x = 888,419.45
  5. Step 5: Solve for x
    x = 888,419.45/955.07
  6. Step 6: Final answer
    x = 930.21

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Double scale
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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.