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Finding the Fourth Proportional to 885.69, 1,328.35 and 337.72

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Solution

The fourth proportional to 885.69, 1,328.35 and 337.72 is: 506.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.69 : 1,328.35 = 337.72 : x
  2. Step 2: Convert to fraction form
    885.69/1,328.35 = 337.72/x
  3. Step 3: Cross multiply
    885.69x = 1,328.35 × 337.72
  4. Step 4: Simplify right side
    885.69x = 448,610.36
  5. Step 5: Solve for x
    x = 448,610.36/885.69
  6. Step 6: Final answer
    x = 506.51

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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.