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Finding the Fourth Proportional to 818.49, 1,226.96 and 525.17

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Solution

The fourth proportional to 818.49, 1,226.96 and 525.17 is: 787.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    818.49 : 1,226.96 = 525.17 : x
  2. Step 2: Convert to fraction form
    818.49/1,226.96 = 525.17/x
  3. Step 3: Cross multiply
    818.49x = 1,226.96 × 525.17
  4. Step 4: Simplify right side
    818.49x = 644,353.82
  5. Step 5: Solve for x
    x = 644,353.82/818.49
  6. Step 6: Final answer
    x = 787.25

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Double scale
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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.