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Finding the Fourth Proportional to 1,230.02, 1,697.44 and 670.48

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Solution

The fourth proportional to 1,230.02, 1,697.44 and 670.48 is: 925.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230.02 : 1,697.44 = 670.48 : x
  2. Step 2: Convert to fraction form
    1,230.02/1,697.44 = 670.48/x
  3. Step 3: Cross multiply
    1,230.02x = 1,697.44 × 670.48
  4. Step 4: Simplify right side
    1,230.02x = 1,138,099.57
  5. Step 5: Solve for x
    x = 1,138,099.57/1,230.02
  6. Step 6: Final answer
    x = 925.27

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1.5x scale

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.