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Finding the Fourth Proportional to 557.50, 836.30 and 210.77

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Solution

The fourth proportional to 557.50, 836.30 and 210.77 is: 316.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.50 : 836.30 = 210.77 : x
  2. Step 2: Convert to fraction form
    557.50/836.30 = 210.77/x
  3. Step 3: Cross multiply
    557.50x = 836.30 × 210.77
  4. Step 4: Simplify right side
    557.50x = 176,267.99
  5. Step 5: Solve for x
    x = 176,267.99/557.50
  6. Step 6: Final answer
    x = 316.17

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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.