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Finding the Fourth Proportional to 836.75, 1,154.72 and 463.75

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Solution

The fourth proportional to 836.75, 1,154.72 and 463.75 is: 639.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.75 : 1,154.72 = 463.75 : x
  2. Step 2: Convert to fraction form
    836.75/1,154.72 = 463.75/x
  3. Step 3: Cross multiply
    836.75x = 1,154.72 × 463.75
  4. Step 4: Simplify right side
    836.75x = 535,501.40
  5. Step 5: Solve for x
    x = 535,501.40/836.75
  6. Step 6: Final answer
    x = 639.98

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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.