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Finding the Fourth Proportional to 885.06, 1,326.78 and 474.53

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Solution

The fourth proportional to 885.06, 1,326.78 and 474.53 is: 711.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.06 : 1,326.78 = 474.53 : x
  2. Step 2: Convert to fraction form
    885.06/1,326.78 = 474.53/x
  3. Step 3: Cross multiply
    885.06x = 1,326.78 × 474.53
  4. Step 4: Simplify right side
    885.06x = 629,590.28
  5. Step 5: Solve for x
    x = 629,590.28/885.06
  6. Step 6: Final answer
    x = 711.35

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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.