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Finding the Fourth Proportional to 858.45, 1,182.98 and 701.49

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Solution

The fourth proportional to 858.45, 1,182.98 and 701.49 is: 966.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    858.45 : 1,182.98 = 701.49 : x
  2. Step 2: Convert to fraction form
    858.45/1,182.98 = 701.49/x
  3. Step 3: Cross multiply
    858.45x = 1,182.98 × 701.49
  4. Step 4: Simplify right side
    858.45x = 829,845.13
  5. Step 5: Solve for x
    x = 829,845.13/858.45
  6. Step 6: Final answer
    x = 966.68

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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.