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Finding the Fourth Proportional to 885.23, 1,326.32 and 808.07

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Solution

The fourth proportional to 885.23, 1,326.32 and 808.07 is: 1,210.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.23 : 1,326.32 = 808.07 : x
  2. Step 2: Convert to fraction form
    885.23/1,326.32 = 808.07/x
  3. Step 3: Cross multiply
    885.23x = 1,326.32 × 808.07
  4. Step 4: Simplify right side
    885.23x = 1,071,755.36
  5. Step 5: Solve for x
    x = 1,071,755.36/885.23
  6. Step 6: Final answer
    x = 1,210.72

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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.