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Finding the Fourth Proportional to 883.80, 1,218.92 and 675.16

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Solution

The fourth proportional to 883.80, 1,218.92 and 675.16 is: 931.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.80 : 1,218.92 = 675.16 : x
  2. Step 2: Convert to fraction form
    883.80/1,218.92 = 675.16/x
  3. Step 3: Cross multiply
    883.80x = 1,218.92 × 675.16
  4. Step 4: Simplify right side
    883.80x = 822,959.60
  5. Step 5: Solve for x
    x = 822,959.60/883.80
  6. Step 6: Final answer
    x = 931.16

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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.