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Finding the Fourth Proportional to 864.41, 1,192.38 and 615.18

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Solution

The fourth proportional to 864.41, 1,192.38 and 615.18 is: 848.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    864.41 : 1,192.38 = 615.18 : x
  2. Step 2: Convert to fraction form
    864.41/1,192.38 = 615.18/x
  3. Step 3: Cross multiply
    864.41x = 1,192.38 × 615.18
  4. Step 4: Simplify right side
    864.41x = 733,528.33
  5. Step 5: Solve for x
    x = 733,528.33/864.41
  6. Step 6: Final answer
    x = 848.59

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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.