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Finding the Fourth Proportional to 2,230.52, 3,345.95 and 670.40

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Solution

The fourth proportional to 2,230.52, 3,345.95 and 670.40 is: 1,005.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,230.52 : 3,345.95 = 670.40 : x
  2. Step 2: Convert to fraction form
    2,230.52/3,345.95 = 670.40/x
  3. Step 3: Cross multiply
    2,230.52x = 3,345.95 × 670.40
  4. Step 4: Simplify right side
    2,230.52x = 2,243,133.24
  5. Step 5: Solve for x
    x = 2,243,133.24/2,230.52
  6. Step 6: Final answer
    x = 1,005.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.