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Finding the Fourth Proportional to 853.52, 1,176.76 and 695.60

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Solution

The fourth proportional to 853.52, 1,176.76 and 695.60 is: 959.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    853.52 : 1,176.76 = 695.60 : x
  2. Step 2: Convert to fraction form
    853.52/1,176.76 = 695.60/x
  3. Step 3: Cross multiply
    853.52x = 1,176.76 × 695.60
  4. Step 4: Simplify right side
    853.52x = 818,554.26
  5. Step 5: Solve for x
    x = 818,554.26/853.52
  6. Step 6: Final answer
    x = 959.03

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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.