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Finding the Fourth Proportional to 887.07, 1,221.36 and 753.99

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Solution

The fourth proportional to 887.07, 1,221.36 and 753.99 is: 1,038.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.07 : 1,221.36 = 753.99 : x
  2. Step 2: Convert to fraction form
    887.07/1,221.36 = 753.99/x
  3. Step 3: Cross multiply
    887.07x = 1,221.36 × 753.99
  4. Step 4: Simplify right side
    887.07x = 920,893.23
  5. Step 5: Solve for x
    x = 920,893.23/887.07
  6. Step 6: Final answer
    x = 1,038.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.