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Finding the Fourth Proportional to 673.92, 930.24 and 591.12

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Solution

The fourth proportional to 673.92, 930.24 and 591.12 is: 815.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.92 : 930.24 = 591.12 : x
  2. Step 2: Convert to fraction form
    673.92/930.24 = 591.12/x
  3. Step 3: Cross multiply
    673.92x = 930.24 × 591.12
  4. Step 4: Simplify right side
    673.92x = 549,883.47
  5. Step 5: Solve for x
    x = 549,883.47/673.92
  6. Step 6: Final answer
    x = 815.95

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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.