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Finding the Fourth Proportional to 836.39, 1,154.19 and 463.38

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Solution

The fourth proportional to 836.39, 1,154.19 and 463.38 is: 639.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.39 : 1,154.19 = 463.38 : x
  2. Step 2: Convert to fraction form
    836.39/1,154.19 = 463.38/x
  3. Step 3: Cross multiply
    836.39x = 1,154.19 × 463.38
  4. Step 4: Simplify right side
    836.39x = 534,828.56
  5. Step 5: Solve for x
    x = 534,828.56/836.39
  6. Step 6: Final answer
    x = 639.45

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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.