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Finding the Fourth Proportional to 928.88, 1,281.44 and 597.19

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Solution

The fourth proportional to 928.88, 1,281.44 and 597.19 is: 823.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    928.88 : 1,281.44 = 597.19 : x
  2. Step 2: Convert to fraction form
    928.88/1,281.44 = 597.19/x
  3. Step 3: Cross multiply
    928.88x = 1,281.44 × 597.19
  4. Step 4: Simplify right side
    928.88x = 765,253.76
  5. Step 5: Solve for x
    x = 765,253.76/928.88
  6. Step 6: Final answer
    x = 823.85

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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.