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Finding the Fourth Proportional to 885.40, 1,326.36 and 473.98

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Solution

The fourth proportional to 885.40, 1,326.36 and 473.98 is: 710.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.40 : 1,326.36 = 473.98 : x
  2. Step 2: Convert to fraction form
    885.40/1,326.36 = 473.98/x
  3. Step 3: Cross multiply
    885.40x = 1,326.36 × 473.98
  4. Step 4: Simplify right side
    885.40x = 628,668.11
  5. Step 5: Solve for x
    x = 628,668.11/885.40
  6. Step 6: Final answer
    x = 710.04

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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.