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Finding the Fourth Proportional to 822.65, 1,233.98 and 302.66

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Solution

The fourth proportional to 822.65, 1,233.98 and 302.66 is: 453.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    822.65 : 1,233.98 = 302.66 : x
  2. Step 2: Convert to fraction form
    822.65/1,233.98 = 302.66/x
  3. Step 3: Cross multiply
    822.65x = 1,233.98 × 302.66
  4. Step 4: Simplify right side
    822.65x = 373,476.39
  5. Step 5: Solve for x
    x = 373,476.39/822.65
  6. Step 6: Final answer
    x = 453.99

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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.