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Finding the Fourth Proportional to 834.08, 1,152.32 and 711.12

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Solution

The fourth proportional to 834.08, 1,152.32 and 711.12 is: 982.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.08 : 1,152.32 = 711.12 : x
  2. Step 2: Convert to fraction form
    834.08/1,152.32 = 711.12/x
  3. Step 3: Cross multiply
    834.08x = 1,152.32 × 711.12
  4. Step 4: Simplify right side
    834.08x = 819,437.80
  5. Step 5: Solve for x
    x = 819,437.80/834.08
  6. Step 6: Final answer
    x = 982.45

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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.