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Finding the Fourth Proportional to 955.36, 1,316.88 and 675.92

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Solution

The fourth proportional to 955.36, 1,316.88 and 675.92 is: 931.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.36 : 1,316.88 = 675.92 : x
  2. Step 2: Convert to fraction form
    955.36/1,316.88 = 675.92/x
  3. Step 3: Cross multiply
    955.36x = 1,316.88 × 675.92
  4. Step 4: Simplify right side
    955.36x = 890,105.53
  5. Step 5: Solve for x
    x = 890,105.53/955.36
  6. Step 6: Final answer
    x = 931.70

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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.