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Finding the Fourth Proportional to 801.15, 1,104.45 and 564.36

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Solution

The fourth proportional to 801.15, 1,104.45 and 564.36 is: 778.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.15 : 1,104.45 = 564.36 : x
  2. Step 2: Convert to fraction form
    801.15/1,104.45 = 564.36/x
  3. Step 3: Cross multiply
    801.15x = 1,104.45 × 564.36
  4. Step 4: Simplify right side
    801.15x = 623,307.40
  5. Step 5: Solve for x
    x = 623,307.40/801.15
  6. Step 6: Final answer
    x = 778.02

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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.