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Finding the Fourth Proportional to 557.50, 836.25 and 394.69

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Solution

The fourth proportional to 557.50, 836.25 and 394.69 is: 592.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.50 : 836.25 = 394.69 : x
  2. Step 2: Convert to fraction form
    557.50/836.25 = 394.69/x
  3. Step 3: Cross multiply
    557.50x = 836.25 × 394.69
  4. Step 4: Simplify right side
    557.50x = 330,059.51
  5. Step 5: Solve for x
    x = 330,059.51/557.50
  6. Step 6: Final answer
    x = 592.04

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.