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Finding the Fourth Proportional to 893.32, 1,233.04 and 561.74

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Solution

The fourth proportional to 893.32, 1,233.04 and 561.74 is: 775.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.32 : 1,233.04 = 561.74 : x
  2. Step 2: Convert to fraction form
    893.32/1,233.04 = 561.74/x
  3. Step 3: Cross multiply
    893.32x = 1,233.04 × 561.74
  4. Step 4: Simplify right side
    893.32x = 692,647.89
  5. Step 5: Solve for x
    x = 692,647.89/893.32
  6. Step 6: Final answer
    x = 775.36

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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.