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Finding the Fourth Proportional to 892.76, 1,230.75 and 626.81

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Solution

The fourth proportional to 892.76, 1,230.75 and 626.81 is: 864.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    892.76 : 1,230.75 = 626.81 : x
  2. Step 2: Convert to fraction form
    892.76/1,230.75 = 626.81/x
  3. Step 3: Cross multiply
    892.76x = 1,230.75 × 626.81
  4. Step 4: Simplify right side
    892.76x = 771,440.25
  5. Step 5: Solve for x
    x = 771,440.25/892.76
  6. Step 6: Final answer
    x = 864.11

Related Problems

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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.