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Finding the Fourth Proportional to 836.70, 1,154.48 and 463.66

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Solution

The fourth proportional to 836.70, 1,154.48 and 463.66 is: 639.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.70 : 1,154.48 = 463.66 : x
  2. Step 2: Convert to fraction form
    836.70/1,154.48 = 463.66/x
  3. Step 3: Cross multiply
    836.70x = 1,154.48 × 463.66
  4. Step 4: Simplify right side
    836.70x = 535,286.20
  5. Step 5: Solve for x
    x = 535,286.20/836.70
  6. Step 6: Final answer
    x = 639.76

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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.